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12021012111 = 329969714249
BaseRepresentation
bin10110011001000001…
…00001011010001111
31011000202122200112210
423030200201122033
5144104334341421
65304500001503
7603614626353
oct131440413217
934022580483
1012021012111
115109603359
1223b5990293
131197610824
1482072b463
154a5521576
hex2cc82168f

12021012111 has 16 divisors (see below), whose sum is σ = 16583580000. Its totient is φ = 7736322048.

The previous prime is 12021012109. The next prime is 12021012149. The reversal of 12021012111 is 11121012021.

It is not a de Polignac number, because 12021012111 - 21 = 12021012109 is a prime.

It is a super-3 number, since 3×120210121113 (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021012151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 836515 + ... + 850763.

It is an arithmetic number, because the mean of its divisors is an integer number (1036473750).

Almost surely, 212021012111 is an apocalyptic number.

12021012111 is a deficient number, since it is larger than the sum of its proper divisors (4562567889).

12021012111 is a wasteful number, since it uses less digits than its factorization.

12021012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23978.

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

Adding to 12021012111 its reverse (11121012021), we get a palindrome (23142024132).

The spelling of 12021012111 in words is "twelve billion, twenty-one million, twelve thousand, one hundred eleven".

Divisors: 1 3 29 87 9697 14249 29091 42747 281213 413221 843639 1239663 138172553 414517659 4007004037 12021012111