102010210020 has 72 divisors (see below), whose sum is σ = 309472275840. Its totient is φ = 27199091520.

The previous prime is 102010209947. The next prime is 102010210039. The reversal of 102010210020 is 20012010201.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 102010209984 and 102010210011.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1483971 + ... + 1551189.

Almost surely, 2^102010210020 is an apocalyptic number.

102010210020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102010210020 is an abundant number, since it is smaller than the sum of its proper divisors (207462065820).

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

102010210020 is a wasteful number, since it uses less digits than its factorization.

102010210020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75665 (or 75660 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 102010210020 its reverse (20012010201), we get a palindrome (122022220221).

The spelling of 102010210020 in words is "one hundred two billion, ten million, two hundred ten thousand, twenty".