12220120209977 has 2 divisors, whose sum is σ = 12220120209978. Its totient is φ = 12220120209976.

The previous prime is 12220120209949. The next prime is 12220120210021. The reversal of 12220120209977 is 77990202102221.

It is an a-pointer prime, because the next prime (12220120210021) can be obtained adding 12220120209977 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8926345314601 + 3293774895376 = 2987699^2 + 1814876^2 .

It is a cyclic number.

It is not a de Polignac number, because 12220120209977 - 2²⁸ = 12219851774521 is a prime.

It is not a weakly prime, because it can be changed into another prime (12220120202977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110060104988 + 6110060104989.

It is an arithmetic number, because the mean of its divisors is an integer number (6110060104989).

Almost surely, 2^{12220120209977} is an apocalyptic number.

It is an amenable number.

12220120209977 is a deficient number, since it is larger than the sum of its proper divisors (1).

12220120209977 is an equidigital number, since it uses as much as digits as its factorization.

12220120209977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 44.

The spelling of 12220120209977 in words is "twelve trillion, two hundred twenty billion, one hundred twenty million, two hundred nine thousand, nine hundred seventy-seven".