122120201209961 has 2 divisors, whose sum is σ = 122120201209962. Its totient is φ = 122120201209960.

The previous prime is 122120201209949. The next prime is 122120201210009. The reversal of 122120201209961 is 169902102021221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110137048944400 + 11983152265561 = 10494620^2 + 3461669^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122120201209961 is a prime.

It is a super-2 number, since 2×122120201209961² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (122120201209661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61060100604980 + 61060100604981.

It is an arithmetic number, because the mean of its divisors is an integer number (61060100604981).

Almost surely, 2^{122120201209961} is an apocalyptic number.

It is an amenable number.

122120201209961 is a deficient number, since it is larger than the sum of its proper divisors (1).

122120201209961 is an equidigital number, since it uses as much as digits as its factorization.

122120201209961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 38.

The spelling of 122120201209961 in words is "one hundred twenty-two trillion, one hundred twenty billion, two hundred one million, two hundred nine thousand, nine hundred sixty-one".