111121011122012 has 12 divisors (see below), whose sum is σ = 194464206184416. Its totient is φ = 55559809355040.

The previous prime is 111121011121999. The next prime is 111121011122053. The reversal of 111121011122012 is 210221110121111.

It is a super-2 number, since 2×111121011122012² (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, 173692289 + ... + 174330872.

It is an arithmetic number, because the mean of its divisors is an integer number (16205350515368).

Almost surely, 2^{111121011122012} is an apocalyptic number.

It is an amenable number.

111121011122012 is a deficient number, since it is larger than the sum of its proper divisors (83343195062404).

111121011122012 is a wasteful number, since it uses less digits than its factorization.

111121011122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348102988 (or 348102986 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 111121011122012 its reverse (210221110121111), we get a palindrome (321342121243123).

The spelling of 111121011122012 in words is "one hundred eleven trillion, one hundred twenty-one billion, eleven million, one hundred twenty-two thousand, twelve".