122191040677 has 4 divisors (see below), whose sum is σ = 122207381676. Its totient is φ = 122174699680.

The previous prime is 122191040617. The next prime is 122191040681. The reversal of 122191040677 is 776040191221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 66457746436 + 55733294241 = 257794^2 + 236079^2 .

It is a cyclic number.

It is not a de Polignac number, because 122191040677 - 2¹⁵ = 122191007909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122191040617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8159278 + ... + 8174239.

It is an arithmetic number, because the mean of its divisors is an integer number (30551845419).

Almost surely, 2^122191040677 is an apocalyptic number.

It is an amenable number.

122191040677 is a deficient number, since it is larger than the sum of its proper divisors (16340999).

122191040677 is an equidigital number, since it uses as much as digits as its factorization.

122191040677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16340998.

The product of its (nonzero) digits is 42336, while the sum is 40.

The spelling of 122191040677 in words is "one hundred twenty-two billion, one hundred ninety-one million, forty thousand, six hundred seventy-seven".