212100002122020 has 96 divisors (see below), whose sum is σ = 628835724228096. Its totient is φ = 53231113113600.

The previous prime is 212100002121919. The next prime is 212100002122061. The reversal of 212100002122020 is 20221200001212.

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

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, 26258760 + ... + 33372480.

It is an arithmetic number, because the mean of its divisors is an integer number (6550372127376).

Almost surely, 2^{212100002122020} is an apocalyptic number.

212100002122020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212100002122020 is an abundant number, since it is smaller than the sum of its proper divisors (416735722106076).

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

212100002122020 is a wasteful number, since it uses less digits than its factorization.

212100002122020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7142981 (or 7142979 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 212100002122020 its reverse (20221200001212), we get a palindrome (232321202123232).

The spelling of 212100002122020 in words is "two hundred twelve trillion, one hundred billion, two million, one hundred twenty-two thousand, twenty".