111012123102 has 32 divisors (see below), whose sum is σ = 226776844800. Its totient is φ = 36212140608.

The previous prime is 111012123091. The next prime is 111012123143. The reversal of 111012123102 is 201321210111.

It is a super-4 number, since 4×111012123102⁴ (a number of 45 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2760274 + ... + 2800202.

It is an arithmetic number, because the mean of its divisors is an integer number (7086776400).

Almost surely, 2^111012123102 is an apocalyptic number.

111012123102 is an abundant number, since it is smaller than the sum of its proper divisors (115764721698).

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

111012123102 is a wasteful number, since it uses less digits than its factorization.

111012123102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49840.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 111012123102 its reverse (201321210111), we get a palindrome (312333333213).

The spelling of 111012123102 in words is "one hundred eleven billion, twelve million, one hundred twenty-three thousand, one hundred two".