102120121020 has 24 divisors (see below), whose sum is σ = 285936339024. Its totient is φ = 27232032256.

The previous prime is 102120121001. The next prime is 102120121021. The reversal of 102120121020 is 20121021201.

102120121020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 102120120987 and 102120121005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102120121021) 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, 851000949 + ... + 851001068.

It is an arithmetic number, because the mean of its divisors is an integer number (11914014126).

Almost surely, 2^102120121020 is an apocalyptic number.

102120121020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102120121020 is an abundant number, since it is smaller than the sum of its proper divisors (183816218004).

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

102120121020 is a wasteful number, since it uses less digits than its factorization.

102120121020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1702002029 (or 1702002027 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 102120121020 its reverse (20121021201), we get a palindrome (122241142221).

The spelling of 102120121020 in words is "one hundred two billion, one hundred twenty million, one hundred twenty-one thousand, twenty".