102112101128 has 64 divisors (see below), whose sum is σ = 215021822400. Its totient is φ = 45176002560.

The previous prime is 102112101121. The next prime is 102112101139. The reversal of 102112101128 is 821101211201.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (102112101121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187676 + ... + 489332.

It is an arithmetic number, because the mean of its divisors is an integer number (3359715975).

Almost surely, 2^102112101128 is an apocalyptic number.

It is an amenable number.

102112101128 is an abundant number, since it is smaller than the sum of its proper divisors (112909721272).

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

102112101128 is a wasteful number, since it uses less digits than its factorization.

102112101128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301830 (or 301826 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 102112101128 its reverse (821101211201), we get a palindrome (923213312329).

The spelling of 102112101128 in words is "one hundred two billion, one hundred twelve million, one hundred one thousand, one hundred twenty-eight".