212133310120121 has 32 divisors (see below), whose sum is σ = 241983163339008. Its totient is φ = 184474628997120.

The previous prime is 212133310119979. The next prime is 212133310120141. The reversal of 212133310120121 is 121021013331212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 212133310120121 - 2¹⁰ = 212133310119097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (212133310120141) 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, 116913785 + ... + 118714361.

It is an arithmetic number, because the mean of its divisors is an integer number (7561973854344).

Almost surely, 2^{212133310120121} is an apocalyptic number.

It is an amenable number.

212133310120121 is a deficient number, since it is larger than the sum of its proper divisors (29849853218887).

212133310120121 is a wasteful number, since it uses less digits than its factorization.

212133310120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806561.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 212133310120121 its reverse (121021013331212), we get a palindrome (333154323451333).

The spelling of 212133310120121 in words is "two hundred twelve trillion, one hundred thirty-three billion, three hundred ten million, one hundred twenty thousand, one hundred twenty-one".