102121202120 has 32 divisors (see below), whose sum is σ = 262597377600. Its totient is φ = 35012983488.

The previous prime is 102121202101. The next prime is 102121202123. The reversal of 102121202120 is 21202121201.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 102121202095 and 102121202104.

It is not an unprimeable number, because it can be changed into a prime (102121202123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182359010 + ... + 182359569.

It is an arithmetic number, because the mean of its divisors is an integer number (8206168050).

Almost surely, 2^102121202120 is an apocalyptic number.

102121202120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102121202120 is an abundant number, since it is smaller than the sum of its proper divisors (160476175480).

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

102121202120 is a wasteful number, since it uses less digits than its factorization.

102121202120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364718597 (or 364718593 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 102121202120 its reverse (21202121201), we get a palindrome (123323323321).

The spelling of 102121202120 in words is "one hundred two billion, one hundred twenty-one million, two hundred two thousand, one hundred twenty".