102321155100 has 72 divisors (see below), whose sum is σ = 299375682480. Its totient is φ = 26979054080.

The previous prime is 102321155099. The next prime is 102321155117. The reversal of 102321155100 is 1551123201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1889427 + ... + 1942826.

It is an arithmetic number, because the mean of its divisors is an integer number (4157995590).

Almost surely, 2^102321155100 is an apocalyptic number.

102321155100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102321155100 is an abundant number, since it is smaller than the sum of its proper divisors (197054527380).

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

102321155100 is a wasteful number, since it uses less digits than its factorization.

102321155100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3832359 (or 3832352 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 21.

Adding to 102321155100 its reverse (1551123201), we get a palindrome (103872278301).

The spelling of 102321155100 in words is "one hundred two billion, three hundred twenty-one million, one hundred fifty-five thousand, one hundred".