12220540177 has 2 divisors, whose sum is σ = 12220540178. Its totient is φ = 12220540176.

The previous prime is 12220540139. The next prime is 12220540181. The reversal of 12220540177 is 77104502221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12166972416 + 53567761 = 110304^2 + 7319^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12220540177 is a prime.

It is not a weakly prime, because it can be changed into another prime (12220549177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110270088 + 6110270089.

It is an arithmetic number, because the mean of its divisors is an integer number (6110270089).

Almost surely, 2^12220540177 is an apocalyptic number.

It is an amenable number.

12220540177 is a deficient number, since it is larger than the sum of its proper divisors (1).

12220540177 is an equidigital number, since it uses as much as digits as its factorization.

12220540177 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7840, while the sum is 31.

The spelling of 12220540177 in words is "twelve billion, two hundred twenty million, five hundred forty thousand, one hundred seventy-seven".