212021220220000 has 60 divisors (see below), whose sum is σ = 521604004973436. Its totient is φ = 84808488080000.

The previous prime is 212021220219973. The next prime is 212021220220001. The reversal of 212021220220000 is 22022120212.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021220220001) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5300510506 + ... + 5300550505.

Almost surely, 2^{212021220220000} is an apocalyptic number.

212021220220000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212021220220000 is an abundant number, since it is smaller than the sum of its proper divisors (309582784753436).

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

212021220220000 is an equidigital number, since it uses as much as digits as its factorization.

212021220220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10601061041 (or 10601061018 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 212021220220000 its reverse (22022120212), we get a palindrome (212043242340212).

The spelling of 212021220220000 in words is "two hundred twelve trillion, twenty-one billion, two hundred twenty million, two hundred twenty thousand".