130551010021 has 4 divisors (see below), whose sum is σ = 130551745792. Its totient is φ = 130550274252.

The previous prime is 130551010013. The next prime is 130551010061. The reversal of 130551010021 is 120010155031.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 130551010021 - 2³ = 130551010013 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 (130551010061) 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, 80146 + ... + 517228.

It is an arithmetic number, because the mean of its divisors is an integer number (32637936448).

Almost surely, 2^130551010021 is an apocalyptic number.

It is an amenable number.

130551010021 is a deficient number, since it is larger than the sum of its proper divisors (735771).

130551010021 is an equidigital number, since it uses as much as digits as its factorization.

130551010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735770.

The product of its (nonzero) digits is 150, while the sum is 19.

Adding to 130551010021 its reverse (120010155031), we get a palindrome (250561165052).

The spelling of 130551010021 in words is "one hundred thirty billion, five hundred fifty-one million, ten thousand, twenty-one".