1222879577 has 4 divisors (see below), whose sum is σ = 1287241680. Its totient is φ = 1158517476.

The previous prime is 1222879543. The next prime is 1222879579. The reversal of 1222879577 is 7759782221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7759782221 = 41 ⋅189262981.

It is not a de Polignac number, because 1222879577 - 2¹⁶ = 1222814041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222879579) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32181023 + ... + 32181060.

It is an arithmetic number, because the mean of its divisors is an integer number (321810420).

Almost surely, 2^1222879577 is an apocalyptic number.

It is an amenable number.

1222879577 is a deficient number, since it is larger than the sum of its proper divisors (64362103).

1222879577 is an equidigital number, since it uses as much as digits as its factorization.

1222879577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64362102.

The product of its digits is 987840, while the sum is 50.

The square root of 1222879577 is about 34969.6951230633. The cubic root of 1222879577 is about 1069.3697563734.

The spelling of 1222879577 in words is "one billion, two hundred twenty-two million, eight hundred seventy-nine thousand, five hundred seventy-seven".