212022220022121 has 16 divisors (see below), whose sum is σ = 283911530423040. Its totient is φ = 140740536478080.

The previous prime is 212022220022087. The next prime is 212022220022131. The reversal of 212022220022121 is 121220022220212.

It is not a de Polignac number, because 212022220022121 - 2¹⁰ = 212022220021097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212022220022131) 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, 109248736 + ... + 111172526.

It is an arithmetic number, because the mean of its divisors is an integer number (17744470651440).

Almost surely, 2^{212022220022121} is an apocalyptic number.

It is an amenable number.

212022220022121 is a deficient number, since it is larger than the sum of its proper divisors (71889310400919).

212022220022121 is a wasteful number, since it uses less digits than its factorization.

212022220022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2081696.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 212022220022121 its reverse (121220022220212), we get a palindrome (333242242242333).

The spelling of 212022220022121 in words is "two hundred twelve trillion, twenty-two billion, two hundred twenty million, twenty-two thousand, one hundred twenty-one".