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201121012011 = 3312277725121
BaseRepresentation
bin1011101101001110111…
…1110001100100101011
3201020010110122222212210
42323103233301210223
511243343434341021
6232221013140203
720346652252413
oct2732357614453
9636113588783
10201121012011
1178327628107
1232b8b02a663
1315c72648aaa
149a3cd2d643
155371aaae76
hex2ed3bf192b

201121012011 has 24 divisors (see below), whose sum is σ = 277201574352. Its totient is φ = 129703603200.

The previous prime is 201121012007. The next prime is 201121012013. The reversal of 201121012011 is 110210121102.

It is not a de Polignac number, because 201121012011 - 22 = 201121012007 is a prime.

It is a super-2 number, since 2×2011210120112 (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201121012013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7993531 + ... + 8018651.

It is an arithmetic number, because the mean of its divisors is an integer number (11550065598).

Almost surely, 2201121012011 is an apocalyptic number.

201121012011 is a deficient number, since it is larger than the sum of its proper divisors (76080562341).

201121012011 is a wasteful number, since it uses less digits than its factorization.

201121012011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27963 (or 27932 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 201121012011 its reverse (110210121102), we get a palindrome (311331133113).

The spelling of 201121012011 in words is "two hundred one billion, one hundred twenty-one million, twelve thousand, eleven".

Divisors: 1 3 31 93 961 2777 2883 8331 25121 75363 86087 258261 778751 2336253 2668697 8006091 24141281 69761017 72423843 209283051 2162591527 6487774581 67040337337 201121012011