212020020112021 has 32 divisors (see below), whose sum is σ = 237268417397760. Its totient is φ = 187846688832000.

The previous prime is 212020020112001. The next prime is 212020020112027. The reversal of 212020020112021 is 120211020020212.

It is a happy number.

It is not a de Polignac number, because 212020020112021 - 2³³ = 212011430177429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212020020111986 and 212020020112004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212020020112027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17242311 + ... + 26857723.

It is an arithmetic number, because the mean of its divisors is an integer number (7414638043680).

Almost surely, 2^{212020020112021} is an apocalyptic number.

It is an amenable number.

212020020112021 is a deficient number, since it is larger than the sum of its proper divisors (25248397285739).

212020020112021 is a wasteful number, since it uses less digits than its factorization.

212020020112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9615837.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212020020112021 its reverse (120211020020212), we get a palindrome (332231040132233).

The spelling of 212020020112021 in words is "two hundred twelve trillion, twenty billion, twenty million, one hundred twelve thousand, twenty-one".