20211313202051 has 2 divisors, whose sum is σ = 20211313202052. Its totient is φ = 20211313202050.

The previous prime is 20211313202039. The next prime is 20211313202063. The reversal of 20211313202051 is 15020231311202.

It is a balanced prime because it is at equal distance from previous prime (20211313202039) and next prime (20211313202063).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20211313202051 is a prime.

It is not a weakly prime, because it can be changed into another prime (20211313202011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105656601025 + 10105656601026.

It is an arithmetic number, because the mean of its divisors is an integer number (10105656601026).

Almost surely, 2^{20211313202051} is an apocalyptic number.

20211313202051 is a deficient number, since it is larger than the sum of its proper divisors (1).

20211313202051 is an equidigital number, since it uses as much as digits as its factorization.

20211313202051 is an evil number, because the sum of its binary digits is even.

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

Adding to 20211313202051 its reverse (15020231311202), we get a palindrome (35231544513253).

The spelling of 20211313202051 in words is "twenty trillion, two hundred eleven billion, three hundred thirteen million, two hundred two thousand, fifty-one".