120421312051 has 2 divisors, whose sum is σ = 120421312052. Its totient is φ = 120421312050.

The previous prime is 120421312019. The next prime is 120421312057. The reversal of 120421312051 is 150213124021.

It is a strong prime.

It is an emirp because it is prime and its reverse (150213124021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120421312051 - 2⁵ = 120421312019 is a prime.

It is not a weakly prime, because it can be changed into another prime (120421312057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60210656025 + 60210656026.

It is an arithmetic number, because the mean of its divisors is an integer number (60210656026).

Almost surely, 2^120421312051 is an apocalyptic number.

120421312051 is a deficient number, since it is larger than the sum of its proper divisors (1).

120421312051 is an equidigital number, since it uses as much as digits as its factorization.

120421312051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 120421312051 its reverse (150213124021), we get a palindrome (270634436072).

The spelling of 120421312051 in words is "one hundred twenty billion, four hundred twenty-one million, three hundred twelve thousand, fifty-one".