122111769877 has 2 divisors, whose sum is σ = 122111769878. Its totient is φ = 122111769876.

The previous prime is 122111769863. The next prime is 122111769911. The reversal of 122111769877 is 778967111221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116058774276 + 6052995601 = 340674^2 + 77801^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122111769877 is a prime.

It is a super-2 number, since 2×122111769877² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122111769077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61055884938 + 61055884939.

It is an arithmetic number, because the mean of its divisors is an integer number (61055884939).

Almost surely, 2^122111769877 is an apocalyptic number.

It is an amenable number.

122111769877 is a deficient number, since it is larger than the sum of its proper divisors (1).

122111769877 is an equidigital number, since it uses as much as digits as its factorization.

122111769877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 592704, while the sum is 52.

The spelling of 122111769877 in words is "one hundred twenty-two billion, one hundred eleven million, seven hundred sixty-nine thousand, eight hundred seventy-seven".