1222553139 has 4 divisors (see below), whose sum is σ = 1630070856. Its totient is φ = 815035424.

The previous prime is 1222553093. The next prime is 1222553141. The reversal of 1222553139 is 9313552221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1222553139 - 2⁹ = 1222552627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1222553159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203758854 + ... + 203758859.

It is an arithmetic number, because the mean of its divisors is an integer number (407517714).

Almost surely, 2^1222553139 is an apocalyptic number.

1222553139 is a deficient number, since it is larger than the sum of its proper divisors (407517717).

1222553139 is an equidigital number, since it uses as much as digits as its factorization.

1222553139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407517716.

The product of its digits is 16200, while the sum is 33.

The square root of 1222553139 is about 34965.0273702167. The cubic root of 1222553139 is about 1069.2745946482.

The spelling of 1222553139 in words is "one billion, two hundred twenty-two million, five hundred fifty-three thousand, one hundred thirty-nine".