1222345677877 has 2 divisors, whose sum is σ = 1222345677878. Its totient is φ = 1222345677876.

The previous prime is 1222345677857. The next prime is 1222345677887. The reversal of 1222345677877 is 7787765432221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1056473566801 + 165872111076 = 1027849^2 + 407274^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222345677877 - 2¹⁵ = 1222345645109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222345677857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611172838938 + 611172838939.

It is an arithmetic number, because the mean of its divisors is an integer number (611172838939).

Almost surely, 2^{1222345677877} is an apocalyptic number.

It is an amenable number.

1222345677877 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222345677877 is an equidigital number, since it uses as much as digits as its factorization.

1222345677877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55319040, while the sum is 61.

The spelling of 1222345677877 in words is "one trillion, two hundred twenty-two billion, three hundred forty-five million, six hundred seventy-seven thousand, eight hundred seventy-seven".