212020012200021 has 16 divisors (see below), whose sum is σ = 292441774425600. Its totient is φ = 136472474996928.

The previous prime is 212020012199939. The next prime is 212020012200043. The reversal of 212020012200021 is 120002210020212.

It is not a de Polignac number, because 212020012200021 - 2¹⁰ = 212020012198997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212020012202021) 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, 117293340 + ... + 119087226.

It is an arithmetic number, because the mean of its divisors is an integer number (18277610901600).

Almost surely, 2^{212020012200021} is an apocalyptic number.

It is an amenable number.

212020012200021 is a deficient number, since it is larger than the sum of its proper divisors (80421762225579).

212020012200021 is a wasteful number, since it uses less digits than its factorization.

212020012200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3152428.

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

Adding to 212020012200021 its reverse (120002210020212), we get a palindrome (332022222220233).

The spelling of 212020012200021 in words is "two hundred twelve trillion, twenty billion, twelve million, two hundred thousand, twenty-one".