23503133131221 has 8 divisors (see below), whose sum is σ = 33180893832384. Its totient is φ = 14747063925440.

The previous prime is 23503133131211. The next prime is 23503133131273. The reversal of 23503133131221 is 12213133130532.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23503133131221 - 2²¹ = 23503131034069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23503133131211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230422873785 + ... + 230422873886.

It is an arithmetic number, because the mean of its divisors is an integer number (4147611729048).

Almost surely, 2^{23503133131221} is an apocalyptic number.

It is an amenable number.

23503133131221 is a deficient number, since it is larger than the sum of its proper divisors (9677760701163).

23503133131221 is a wasteful number, since it uses less digits than its factorization.

23503133131221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460845747691.

The product of its (nonzero) digits is 9720, while the sum is 30.

Adding to 23503133131221 its reverse (12213133130532), we get a palindrome (35716266261753).

The spelling of 23503133131221 in words is "twenty-three trillion, five hundred three billion, one hundred thirty-three million, one hundred thirty-one thousand, two hundred twenty-one".