122011221977 has 2 divisors, whose sum is σ = 122011221978. Its totient is φ = 122011221976.

The previous prime is 122011221971. The next prime is 122011222027. The reversal of 122011221977 is 779122110221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118624447561 + 3386774416 = 344419^2 + 58196^2 .

It is a cyclic number.

It is not a de Polignac number, because 122011221977 - 2³⁴ = 104831352793 is a prime.

It is not a weakly prime, because it can be changed into another prime (122011221971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61005610988 + 61005610989.

It is an arithmetic number, because the mean of its divisors is an integer number (61005610989).

Almost surely, 2^122011221977 is an apocalyptic number.

It is an amenable number.

122011221977 is a deficient number, since it is larger than the sum of its proper divisors (1).

122011221977 is an equidigital number, since it uses as much as digits as its factorization.

122011221977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 35.

The spelling of 122011221977 in words is "one hundred twenty-two billion, eleven million, two hundred twenty-one thousand, nine hundred seventy-seven".