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2002111212 = 2231492574357
BaseRepresentation
bin111011101010101…
…1100101011101100
312011112022210021010
41313111130223230
513100020024322
6530400105220
7100420443633
oct16725345354
95145283233
102002111212
11938159872
1247a605210
1325ba362ba
1414dc8851a
15bab7d20c
hex7755caec

2002111212 has 48 divisors (see below), whose sum is σ = 4722328800. Its totient is φ = 660160512.

The previous prime is 2002111211. The next prime is 2002111229. The reversal of 2002111212 is 2121112002.

It is a super-2 number, since 2×20021112122 = 8016898610432217888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (2002111211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 457338 + ... + 461694.

It is an arithmetic number, because the mean of its divisors is an integer number (98381850).

Almost surely, 22002111212 is an apocalyptic number.

It is an amenable number.

2002111212 is an abundant number, since it is smaller than the sum of its proper divisors (2720217588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2002111212 is a wasteful number, since it uses less digits than its factorization.

2002111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4770 (or 4768 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 2002111212 is about 44744.9573918671. The cubic root of 2002111212 is about 1260.3642207334.

Adding to 2002111212 its reverse (2121112002), we get a palindrome (4123223214).

The spelling of 2002111212 in words is "two billion, two million, one hundred eleven thousand, two hundred twelve".

Divisors: 1 2 3 4 6 12 149 257 298 447 514 596 771 894 1028 1542 1788 3084 4357 8714 13071 17428 26142 38293 52284 76586 114879 153172 229758 459516 649193 1119749 1298386 1947579 2239498 2596772 3359247 3895158 4478996 6718494 7790316 13436988 166842601 333685202 500527803 667370404 1001055606 2002111212