211301620051 has 2 divisors, whose sum is σ = 211301620052. Its totient is φ = 211301620050.

The previous prime is 211301620001. The next prime is 211301620087. The reversal of 211301620051 is 150026103112.

It is a happy number.

211301620051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211301620051 is a prime.

It is not a weakly prime, because it can be changed into another prime (211301620001) 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, 105650810025 + 105650810026.

It is an arithmetic number, because the mean of its divisors is an integer number (105650810026).

Almost surely, 2^211301620051 is an apocalyptic number.

211301620051 is a deficient number, since it is larger than the sum of its proper divisors (1).

211301620051 is an equidigital number, since it uses as much as digits as its factorization.

211301620051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 22.

Adding to 211301620051 its reverse (150026103112), we get a palindrome (361327723163).

The spelling of 211301620051 in words is "two hundred eleven billion, three hundred one million, six hundred twenty thousand, fifty-one".