130221002021 has 4 divisors (see below), whose sum is σ = 142059274944. Its totient is φ = 118382729100.

The previous prime is 130221001979. The next prime is 130221002033. The reversal of 130221002021 is 120200122031.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-130221002021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130221001987 and 130221002005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130221002521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5919136445 + ... + 5919136466.

It is an arithmetic number, because the mean of its divisors is an integer number (35514818736).

Almost surely, 2^130221002021 is an apocalyptic number.

130221002021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

130221002021 is a deficient number, since it is larger than the sum of its proper divisors (11838272923).

130221002021 is a wasteful number, since it uses less digits than its factorization.

130221002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11838272922.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 130221002021 its reverse (120200122031), we get a palindrome (250421124052).

The spelling of 130221002021 in words is "one hundred thirty billion, two hundred twenty-one million, two thousand, twenty-one".