102121112320 has 72 divisors (see below), whose sum is σ = 249227462736. Its totient is φ = 40077692928.

The previous prime is 102121112309. The next prime is 102121112347. The reversal of 102121112320 is 23211121201.

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

It is a junction number, because it is equal to n+sod(n) for n = 102121112294 and 102121112303.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 684822 + ... + 820501.

It is an arithmetic number, because the mean of its divisors is an integer number (3461492538).

Almost surely, 2^102121112320 is an apocalyptic number.

102121112320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102121112320 is an abundant number, since it is smaller than the sum of its proper divisors (147106350416).

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

102121112320 is an equidigital number, since it uses as much as digits as its factorization.

102121112320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505397 (or 1505383 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 102121112320 its reverse (23211121201), we get a palindrome (125332233521).

The spelling of 102121112320 in words is "one hundred two billion, one hundred twenty-one million, one hundred twelve thousand, three hundred twenty".