2431153012221 has 6 divisors (see below), whose sum is σ = 3511665462110. Its totient is φ = 1620768674808.

The previous prime is 2431153012159. The next prime is 2431153012229. The reversal of 2431153012221 is 1222103511342.

It is a happy number.

2431153012221 is a `hidden beast` number, since 2 + 4 + 3 + 1 + 1 + 530 + 122 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1710667805625 + 720485206596 = 1307925^2 + 848814^2 .

It is not a de Polignac number, because 2431153012221 - 2²⁷ = 2431018794493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2431153012229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 135064056226 + ... + 135064056243.

Almost surely, 2^{2431153012221} is an apocalyptic number.

It is an amenable number.

2431153012221 is a deficient number, since it is larger than the sum of its proper divisors (1080512449889).

2431153012221 is a wasteful number, since it uses less digits than its factorization.

2431153012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270128112475 (or 270128112472 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 2431153012221 its reverse (1222103511342), we get a palindrome (3653256523563).

The spelling of 2431153012221 in words is "two trillion, four hundred thirty-one billion, one hundred fifty-three million, twelve thousand, two hundred twenty-one".