202100212020 has 96 divisors (see below), whose sum is σ = 674839001088. Its totient is φ = 44185882752.

The previous prime is 202100212019. The next prime is 202100212051. The reversal of 202100212020 is 20212001202.

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 = 202100211987 and 202100212005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10451014 + ... + 10470333.

It is an arithmetic number, because the mean of its divisors is an integer number (7029572928).

Almost surely, 2^202100212020 is an apocalyptic number.

202100212020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202100212020 is an abundant number, since it is smaller than the sum of its proper divisors (472738789068).

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

202100212020 is a wasteful number, since it uses less digits than its factorization.

202100212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20921389 (or 20921387 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 202100212020 its reverse (20212001202), we get a palindrome (222312213222).

The spelling of 202100212020 in words is "two hundred two billion, one hundred million, two hundred twelve thousand, twenty".