1222611355 has 32 divisors (see below), whose sum is σ = 1781668224. Its totient is φ = 786241536.

The previous prime is 1222611343. The next prime is 1222611359. The reversal of 1222611355 is 5531162221.

It is a cyclic number.

It is not a de Polignac number, because 1222611355 - 2⁵ = 1222611323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1222611359) 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 31 ways as a sum of consecutive naturals, for example, 170829 + ... + 177841.

It is an arithmetic number, because the mean of its divisors is an integer number (55677132).

Almost surely, 2^1222611355 is an apocalyptic number.

1222611355 is a deficient number, since it is larger than the sum of its proper divisors (559056869).

1222611355 is a wasteful number, since it uses less digits than its factorization.

1222611355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7335.

The product of its digits is 3600, while the sum is 28.

The square root of 1222611355 is about 34965.8598492873. The cubic root of 1222611355 is about 1069.2915667535.

Adding to 1222611355 its reverse (5531162221), we get a palindrome (6753773576).

The spelling of 1222611355 in words is "one billion, two hundred twenty-two million, six hundred eleven thousand, three hundred fifty-five".