111212010101012 has 12 divisors (see below), whose sum is σ = 194963058133620. Its totient is φ = 55508279205696.

The previous prime is 111212010100999. The next prime is 111212010101053. The reversal of 111212010101012 is 210101010212111.

It can be written as a sum of positive squares in 2 ways, for example, as 75584314517776 + 35627695583236 = 8693924^2 + 5968894^2 .

It is a super-2 number, since 2×111212010101012² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24431458643 + ... + 24431463194.

It is an arithmetic number, because the mean of its divisors is an integer number (16246921511135).

Almost surely, 2^{111212010101012} is an apocalyptic number.

It is an amenable number.

111212010101012 is a deficient number, since it is larger than the sum of its proper divisors (83751048032608).

111212010101012 is a wasteful number, since it uses less digits than its factorization.

111212010101012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48862922410 (or 48862922408 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 111212010101012 its reverse (210101010212111), we get a palindrome (321313020313123).

The spelling of 111212010101012 in words is "one hundred eleven trillion, two hundred twelve billion, ten million, one hundred one thousand, twelve".