2503122211321 has 2 divisors, whose sum is σ = 2503122211322. Its totient is φ = 2503122211320.

The previous prime is 2503122211279. The next prime is 2503122211327. The reversal of 2503122211321 is 1231122213052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1815516402921 + 687605808400 = 1347411^2 + 829220^2 .

It is a cyclic number.

It is not a de Polignac number, because 2503122211321 - 2²⁵ = 2503088656889 is a prime.

It is not a weakly prime, because it can be changed into another prime (2503122211327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1251561105660 + 1251561105661.

It is an arithmetic number, because the mean of its divisors is an integer number (1251561105661).

Almost surely, 2^{2503122211321} is an apocalyptic number.

It is an amenable number.

2503122211321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2503122211321 is an equidigital number, since it uses as much as digits as its factorization.

2503122211321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 2503122211321 its reverse (1231122213052), we get a palindrome (3734244424373).

The spelling of 2503122211321 in words is "two trillion, five hundred three billion, one hundred twenty-two million, two hundred eleven thousand, three hundred twenty-one".