202100020620 has 48 divisors (see below), whose sum is σ = 565899559008. Its totient is φ = 53891481600.

The previous prime is 202100020613. The next prime is 202100020621. The reversal of 202100020620 is 26020001202.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 202100020620.

It is not an unprimeable number, because it can be changed into a prime (202100020621) 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, 3426822 + ... + 3485298.

It is an arithmetic number, because the mean of its divisors is an integer number (11789574146).

Almost surely, 2^202100020620 is an apocalyptic number.

202100020620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202100020620 is an abundant number, since it is smaller than the sum of its proper divisors (363799538388).

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

202100020620 is a wasteful number, since it uses less digits than its factorization.

202100020620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116090 (or 116088 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 202100020620 its reverse (26020001202), we get a palindrome (228120021822).

The spelling of 202100020620 in words is "two hundred two billion, one hundred million, twenty thousand, six hundred twenty".