12520120051 has 8 divisors (see below), whose sum is σ = 13132088640. Its totient is φ = 11922550848.

The previous prime is 12520120043. The next prime is 12520120111. The reversal of 12520120051 is 15002102521.

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

It is not a de Polignac number, because 12520120051 - 2³ = 12520120043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12520120031) 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, 3598066 + ... + 3601543.

It is an arithmetic number, because the mean of its divisors is an integer number (1641511080).

Almost surely, 2^12520120051 is an apocalyptic number.

12520120051 is a deficient number, since it is larger than the sum of its proper divisors (611968589).

12520120051 is an equidigital number, since it uses as much as digits as its factorization.

12520120051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7199693.

The product of its (nonzero) digits is 200, while the sum is 19.

Adding to 12520120051 its reverse (15002102521), we get a palindrome (27522222572).

The spelling of 12520120051 in words is "twelve billion, five hundred twenty million, one hundred twenty thousand, fifty-one".