2121233020311 has 32 divisors (see below), whose sum is σ = 2892604036608. Its totient is φ = 1382341340160.

The previous prime is 2121233020297. The next prime is 2121233020331. The reversal of 2121233020311 is 1130203321212.

It is not a de Polignac number, because 2121233020311 - 2⁹ = 2121233019799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121233020331) 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, 77998726 + ... + 78025916.

It is an arithmetic number, because the mean of its divisors is an integer number (90393876144).

Almost surely, 2^{2121233020311} is an apocalyptic number.

2121233020311 is a deficient number, since it is larger than the sum of its proper divisors (771371016297).

2121233020311 is a wasteful number, since it uses less digits than its factorization.

2121233020311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30231.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 2121233020311 its reverse (1130203321212), we get a palindrome (3251436341523).

The spelling of 2121233020311 in words is "two trillion, one hundred twenty-one billion, two hundred thirty-three million, twenty thousand, three hundred eleven".