213223033210121 has 16 divisors (see below), whose sum is σ = 232959019991040. Its totient is φ = 193545753595920.

The previous prime is 213223033210079. The next prime is 213223033210139. The reversal of 213223033210121 is 121012330322312.

It is a de Polignac number, because none of the positive numbers 2^k-213223033210121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (213223033210021) 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, 153648800 + ... + 155030318.

It is an arithmetic number, because the mean of its divisors is an integer number (14559938749440).

Almost surely, 2^{213223033210121} is an apocalyptic number.

It is an amenable number.

213223033210121 is a deficient number, since it is larger than the sum of its proper divisors (19735986780919).

213223033210121 is a wasteful number, since it uses less digits than its factorization.

213223033210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402756.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 213223033210121 its reverse (121012330322312), we get a palindrome (334235363532433).

The spelling of 213223033210121 in words is "two hundred thirteen trillion, two hundred twenty-three billion, thirty-three million, two hundred ten thousand, one hundred twenty-one".