102121120 has 48 divisors (see below), whose sum is σ = 241865568. Its totient is φ = 40746240.

The previous prime is 102121109. The next prime is 102121133. The reversal of 102121120 is 21121201.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 102121097 and 102121106.

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, 125515 + ... + 126325.

It is an arithmetic number, because the mean of its divisors is an integer number (5038866).

Almost surely, 2^102121120 is an apocalyptic number.

102121120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102121120 is an abundant number, since it is smaller than the sum of its proper divisors (139744448).

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

102121120 is an equidigital number, since it uses as much as digits as its factorization.

102121120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1613 (or 1605 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 102121120 is about 10105.4994928504. The cubic root of 102121120 is about 467.4177383929.

Adding to 102121120 its reverse (21121201), we get a palindrome (123242321).

The spelling of 102121120 in words is "one hundred two million, one hundred twenty-one thousand, one hundred twenty".