2232131212221 has 64 divisors (see below), whose sum is σ = 3199080407040. Its totient is φ = 1379505576960.

The previous prime is 2232131212169. The next prime is 2232131212253. The reversal of 2232131212221 is 1222121312322.

It is not a de Polignac number, because 2232131212221 - 2⁷ = 2232131212093 is a prime.

It is a super-3 number, since 3×2232131212221³ (a number of 38 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2232131212191 and 2232131212200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2232131212121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 429501195 + ... + 429506391.

It is an arithmetic number, because the mean of its divisors is an integer number (49985631360).

Almost surely, 2^{2232131212221} is an apocalyptic number.

It is an amenable number.

2232131212221 is a deficient number, since it is larger than the sum of its proper divisors (966949194819).

2232131212221 is a wasteful number, since it uses less digits than its factorization.

2232131212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5834.

The product of its digits is 1152, while the sum is 24.

Adding to 2232131212221 its reverse (1222121312322), we get a palindrome (3454252524543).

The spelling of 2232131212221 in words is "two trillion, two hundred thirty-two billion, one hundred thirty-one million, two hundred twelve thousand, two hundred twenty-one".