2531221155052 has 12 divisors (see below), whose sum is σ = 4437824893936. Its totient is φ = 1263271185360.

The previous prime is 2531221155041. The next prime is 2531221155059. The reversal of 2531221155052 is 2505511221352.

It is a junction number, because it is equal to n+sod(n) for n = 2531221154999 and 2531221155017.

It is not an unprimeable number, because it can be changed into a prime (2531221155059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 584845608 + ... + 584849935.

Almost surely, 2^{2531221155052} is an apocalyptic number.

It is an amenable number.

2531221155052 is a deficient number, since it is larger than the sum of its proper divisors (1906603738884).

2531221155052 is a wasteful number, since it uses less digits than its factorization.

2531221155052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169696088 (or 1169696086 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 34.

The spelling of 2531221155052 in words is "two trillion, five hundred thirty-one billion, two hundred twenty-one million, one hundred fifty-five thousand, fifty-two".