130620051221 has 8 divisors (see below), whose sum is σ = 142506162624. Its totient is φ = 118735866720.

The previous prime is 130620051179. The next prime is 130620051227. The reversal of 130620051221 is 122150026031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130620051221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130620051227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338120 + ... + 612833.

It is an arithmetic number, because the mean of its divisors is an integer number (17813270328).

Almost surely, 2^130620051221 is an apocalyptic number.

130620051221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

130620051221 is a deficient number, since it is larger than the sum of its proper divisors (11886111403).

130620051221 is a wasteful number, since it uses less digits than its factorization.

130620051221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963451.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 130620051221 its reverse (122150026031), we get a palindrome (252770077252).

The spelling of 130620051221 in words is "one hundred thirty billion, six hundred twenty million, fifty-one thousand, two hundred twenty-one".