102111323120 has 80 divisors (see below), whose sum is σ = 238860128640. Its totient is φ = 40595385600.

The previous prime is 102111323077. The next prime is 102111323147. The reversal of 102111323120 is 21323111201.

It is a tau number, because it is divible by the number of its divisors (80).

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, 13685951 + ... + 13693409.

It is an arithmetic number, because the mean of its divisors is an integer number (2985751608).

Almost surely, 2^102111323120 is an apocalyptic number.

102111323120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102111323120 is an abundant number, since it is smaller than the sum of its proper divisors (136748805520).

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

102111323120 is a wasteful number, since it uses less digits than its factorization.

102111323120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8494 (or 8488 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 102111323120 its reverse (21323111201), we get a palindrome (123434434321).

It can be divided in two parts, 10211 and 1323120, that added together give a palindrome (1333331).

The spelling of 102111323120 in words is "one hundred two billion, one hundred eleven million, three hundred twenty-three thousand, one hundred twenty".