5105220601621 has 12 divisors (see below), whose sum is σ = 6197934652768. Its totient is φ = 4118497290432.

The previous prime is 5105220601573. The next prime is 5105220601669. The reversal of 5105220601621 is 1261060225015.

It is an interprime number because it is at equal distance from previous prime (5105220601573) and next prime (5105220601669).

It is not a de Polignac number, because 5105220601621 - 2³⁵ = 5070860863253 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 (5105220601021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1261792491 + ... + 1261796536.

Almost surely, 2^{5105220601621} is an apocalyptic number.

It is an amenable number.

5105220601621 is a deficient number, since it is larger than the sum of its proper divisors (1092714051147).

5105220601621 is a wasteful number, since it uses less digits than its factorization.

5105220601621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2523589068 (or 2523589051 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

Adding to 5105220601621 its reverse (1261060225015), we get a palindrome (6366280826636).

The spelling of 5105220601621 in words is "five trillion, one hundred five billion, two hundred twenty million, six hundred one thousand, six hundred twenty-one".