122122210211951 has 2 divisors, whose sum is σ = 122122210211952. Its totient is φ = 122122210211950.

The previous prime is 122122210211891. The next prime is 122122210212017. The reversal of 122122210211951 is 159112012221221.

It is a weak prime.

It is an emirp because it is prime and its reverse (159112012221221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122122210211951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122122210210951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61061105105975 + 61061105105976.

It is an arithmetic number, because the mean of its divisors is an integer number (61061105105976).

Almost surely, 2^{122122210211951} is an apocalyptic number.

122122210211951 is a deficient number, since it is larger than the sum of its proper divisors (1).

122122210211951 is an equidigital number, since it uses as much as digits as its factorization.

122122210211951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 32.

The spelling of 122122210211951 in words is "one hundred twenty-two trillion, one hundred twenty-two billion, two hundred ten million, two hundred eleven thousand, nine hundred fifty-one".