2631222241621 has 4 divisors (see below), whose sum is σ = 2745623208672. Its totient is φ = 2516821274572.

The previous prime is 2631222241607. The next prime is 2631222241639. The reversal of 2631222241621 is 1261422221362.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2631222241621 - 2⁷ = 2631222241493 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 (2631222281621) 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, 57200483491 + ... + 57200483536.

It is an arithmetic number, because the mean of its divisors is an integer number (686405802168).

Almost surely, 2^{2631222241621} is an apocalyptic number.

It is an amenable number.

2631222241621 is a deficient number, since it is larger than the sum of its proper divisors (114400967051).

2631222241621 is a wasteful number, since it uses less digits than its factorization.

2631222241621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114400967050.

The product of its digits is 27648, while the sum is 34.

Adding to 2631222241621 its reverse (1261422221362), we get a palindrome (3892644462983).

The spelling of 2631222241621 in words is "two trillion, six hundred thirty-one billion, two hundred twenty-two million, two hundred forty-one thousand, six hundred twenty-one".