20211230051 has 2 divisors, whose sum is σ = 20211230052. Its totient is φ = 20211230050.

The previous prime is 20211230027. The next prime is 20211230063. The reversal of 20211230051 is 15003211202.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20211230051 - 2¹⁴ = 20211213667 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (20211530051) 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 as a sum of consecutive naturals, namely, 10105615025 + 10105615026.

It is an arithmetic number, because the mean of its divisors is an integer number (10105615026).

Almost surely, 2^20211230051 is an apocalyptic number.

20211230051 is a deficient number, since it is larger than the sum of its proper divisors (1).

20211230051 is an equidigital number, since it uses as much as digits as its factorization.

20211230051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 17.

Adding to 20211230051 its reverse (15003211202), we get a palindrome (35214441253).

The spelling of 20211230051 in words is "twenty billion, two hundred eleven million, two hundred thirty thousand, fifty-one".