212122221101121 has 32 divisors (see below), whose sum is σ = 290561042329600. Its totient is φ = 137551413288960.

The previous prime is 212122221101111. The next prime is 212122221101123. The reversal of 212122221101121 is 121101122221212.

It is not a de Polignac number, because 212122221101121 - 2⁹ = 212122221100609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212122221101123) 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, 6215290185 + ... + 6215324313.

It is an arithmetic number, because the mean of its divisors is an integer number (9080032572800).

Almost surely, 2^{212122221101121} is an apocalyptic number.

It is an amenable number.

212122221101121 is a deficient number, since it is larger than the sum of its proper divisors (78438821228479).

212122221101121 is a wasteful number, since it uses less digits than its factorization.

212122221101121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49369.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 212122221101121 its reverse (121101122221212), we get a palindrome (333223343322333).

The spelling of 212122221101121 in words is "two hundred twelve trillion, one hundred twenty-two billion, two hundred twenty-one million, one hundred one thousand, one hundred twenty-one".