102111112020112 has 40 divisors (see below), whose sum is σ = 215255244711416. Its totient is φ = 46642347749376.

The previous prime is 102111112020109. The next prime is 102111112020119. The reversal of 102111112020112 is 211020211111201.

It can be written as a sum of positive squares in 4 ways, for example, as 10984690547856 + 91126421472256 = 3314316^2 + 9546016^2 .

It is a super-2 number, since 2×102111112020112² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (102111112020119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2530489143 + ... + 2530529494.

Almost surely, 2^{102111112020112} is an apocalyptic number.

It is an amenable number.

102111112020112 is an abundant number, since it is smaller than the sum of its proper divisors (113144132691304).

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

102111112020112 is a wasteful number, since it uses less digits than its factorization.

102111112020112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5061018755 (or 5061018749 counting only the distinct ones).

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

Adding to 102111112020112 its reverse (211020211111201), we get a palindrome (313131323131313).

The spelling of 102111112020112 in words is "one hundred two trillion, one hundred eleven billion, one hundred twelve million, twenty thousand, one hundred twelve".