102111001188 has 24 divisors (see below), whose sum is σ = 272296003392. Its totient is φ = 29174571744.

The previous prime is 102111001169. The next prime is 102111001189. The reversal of 102111001188 is 881100111201.

It is a super-2 number, since 2×102111001188² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102111001189) 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, 607803495 + ... + 607803662.

It is an arithmetic number, because the mean of its divisors is an integer number (11345666808).

Almost surely, 2^102111001188 is an apocalyptic number.

It is an amenable number.

102111001188 is an abundant number, since it is smaller than the sum of its proper divisors (170185002204).

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

102111001188 is a wasteful number, since it uses less digits than its factorization.

102111001188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215607171 (or 1215607169 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 24.

Adding to 102111001188 its reverse (881100111201), we get a palindrome (983211112389).

The spelling of 102111001188 in words is "one hundred two billion, one hundred eleven million, one thousand, one hundred eighty-eight".