102121100120 has 64 divisors (see below), whose sum is σ = 247491810720. Its totient is φ = 37699467264.

The previous prime is 102121100111. The next prime is 102121100131. The reversal of 102121100120 is 21001121201.

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 15 ways as a sum of consecutive naturals, for example, 3577424 + ... + 3605856.

Almost surely, 2^102121100120 is an apocalyptic number.

102121100120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102121100120 is an abundant number, since it is smaller than the sum of its proper divisors (145370710600).

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

102121100120 is a wasteful number, since it uses less digits than its factorization.

102121100120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35364 (or 35360 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 102121100120 its reverse (21001121201), we get a palindrome (123122221321).

The spelling of 102121100120 in words is "one hundred two billion, one hundred twenty-one million, one hundred thousand, one hundred twenty".