2123210211321 has 16 divisors (see below), whose sum is σ = 3155234990400. Its totient is φ = 1262093995008.

The previous prime is 2123210211319. The next prime is 2123210211323. The reversal of 2123210211321 is 1231120123212.

It is an interprime number because it is at equal distance from previous prime (2123210211319) and next prime (2123210211323).

It is not a de Polignac number, because 2123210211321 - 2¹ = 2123210211319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2123210211323) 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, 1095566736 + ... + 1095568673.

It is an arithmetic number, because the mean of its divisors is an integer number (197202186900).

Almost surely, 2^{2123210211321} is an apocalyptic number.

It is an amenable number.

2123210211321 is a deficient number, since it is larger than the sum of its proper divisors (1032024779079).

2123210211321 is a wasteful number, since it uses less digits than its factorization.

2123210211321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2191135448.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 2123210211321 its reverse (1231120123212), we get a palindrome (3354330334533).

The spelling of 2123210211321 in words is "two trillion, one hundred twenty-three billion, two hundred ten million, two hundred eleven thousand, three hundred twenty-one".