102101012020 has 48 divisors (see below), whose sum is σ = 250741104768. Its totient is φ = 34191964800.

The previous prime is 102101011973. The next prime is 102101012029. The reversal of 102101012020 is 20210101201.

102101012020 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 (10).

It is a junction number, because it is equal to n+sod(n) for n = 102101011988 and 102101012006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102101012029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8474131 + ... + 8486170.

It is an arithmetic number, because the mean of its divisors is an integer number (5223773016).

Almost surely, 2^102101012020 is an apocalyptic number.

102101012020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102101012020 is an abundant number, since it is smaller than the sum of its proper divisors (148640092748).

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

102101012020 is a wasteful number, since it uses less digits than its factorization.

102101012020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16960360 (or 16960358 counting only the distinct ones).

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

Adding to 102101012020 its reverse (20210101201), we get a palindrome (122311113221).

The spelling of 102101012020 in words is "one hundred two billion, one hundred one million, twelve thousand, twenty".