211100120051 has 2 divisors, whose sum is σ = 211100120052. Its totient is φ = 211100120050.

The previous prime is 211100119991. The next prime is 211100120053. The reversal of 211100120051 is 150021001112.

211100120051 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-211100120051 is a prime.

It is a super-2 number, since 2×211100120051² (a number of 23 digits) contains 22 as substring.

Together with 211100120053, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (211100120053) 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, 105550060025 + 105550060026.

It is an arithmetic number, because the mean of its divisors is an integer number (105550060026).

Almost surely, 2^211100120051 is an apocalyptic number.

211100120051 is a deficient number, since it is larger than the sum of its proper divisors (1).

211100120051 is an equidigital number, since it uses as much as digits as its factorization.

211100120051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20, while the sum is 14.

Adding to 211100120051 its reverse (150021001112), we get a palindrome (361121121163).

The spelling of 211100120051 in words is "two hundred eleven billion, one hundred million, one hundred twenty thousand, fifty-one".