2331142221 has 16 divisors (see below), whose sum is σ = 3295603584. Its totient is φ = 1460642304.

The previous prime is 2331142211. The next prime is 2331142279. The reversal of 2331142221 is 1222411332.

It is not a de Polignac number, because 2331142221 - 2⁶ = 2331142157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2331142211) 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, 5641 + ... + 68513.

It is an arithmetic number, because the mean of its divisors is an integer number (205975224).

Almost surely, 2^2331142221 is an apocalyptic number.

It is an amenable number.

2331142221 is a deficient number, since it is larger than the sum of its proper divisors (964461363).

2331142221 is a wasteful number, since it uses less digits than its factorization.

2331142221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63620.

The product of its digits is 576, while the sum is 21.

The square root of 2331142221 is about 48281.9036596529. The cubic root of 2331142221 is about 1325.9371030227.

Adding to 2331142221 its reverse (1222411332), we get a palindrome (3553553553).

The spelling of 2331142221 in words is "two billion, three hundred thirty-one million, one hundred forty-two thousand, two hundred twenty-one".