1223112977 has 2 divisors, whose sum is σ = 1223112978. Its totient is φ = 1223112976.

The previous prime is 1223112937. The next prime is 1223113063. The reversal of 1223112977 is 7792113221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1220524096 + 2588881 = 34936^2 + 1609^2 .

It is a cyclic number.

It is not a de Polignac number, because 1223112977 - 2⁸ = 1223112721 is a prime.

It is not a weakly prime, because it can be changed into another prime (1223112937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611556488 + 611556489.

It is an arithmetic number, because the mean of its divisors is an integer number (611556489).

Almost surely, 2^1223112977 is an apocalyptic number.

It is an amenable number.

1223112977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223112977 is an equidigital number, since it uses as much as digits as its factorization.

1223112977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10584, while the sum is 35.

The square root of 1223112977 is about 34973.0321390640. The cubic root of 1223112977 is about 1069.4377857004.

The spelling of 1223112977 in words is "one billion, two hundred twenty-three million, one hundred twelve thousand, nine hundred seventy-seven".