1220112098977 has 2 divisors, whose sum is σ = 1220112098978. Its totient is φ = 1220112098976.

The previous prime is 1220112098969. The next prime is 1220112098983. The reversal of 1220112098977 is 7798902110221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 783232080016 + 436880018961 = 885004^2 + 660969^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220112098977 - 2³ = 1220112098969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1220112098977.

It is not a weakly prime, because it can be changed into another prime (1220112098917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610056049488 + 610056049489.

It is an arithmetic number, because the mean of its divisors is an integer number (610056049489).

Almost surely, 2^{1220112098977} is an apocalyptic number.

It is an amenable number.

1220112098977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220112098977 is an equidigital number, since it uses as much as digits as its factorization.

1220112098977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 49.

The spelling of 1220112098977 in words is "one trillion, two hundred twenty billion, one hundred twelve million, ninety-eight thousand, nine hundred seventy-seven".