1220223000977 has 2 divisors, whose sum is σ = 1220223000978. Its totient is φ = 1220223000976.

The previous prime is 1220223000947. The next prime is 1220223001037. The reversal of 1220223000977 is 7790003220221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1077608010241 + 142614990736 = 1038079^2 + 377644^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220223000977 - 2²⁶ = 1220155892113 is a prime.

It is a super-2 number, since 2×1220223000977² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1220223000947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610111500488 + 610111500489.

It is an arithmetic number, because the mean of its divisors is an integer number (610111500489).

Almost surely, 2^{1220223000977} is an apocalyptic number.

It is an amenable number.

1220223000977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220223000977 is an equidigital number, since it uses as much as digits as its factorization.

1220223000977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 35.

The spelling of 1220223000977 in words is "one trillion, two hundred twenty billion, two hundred twenty-three million, nine hundred seventy-seven", and thus it is an aban number.