1222530355 has 4 divisors (see below), whose sum is σ = 1467036432. Its totient is φ = 978024280.

The previous prime is 1222530317. The next prime is 1222530371. The reversal of 1222530355 is 5530352221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5530352221 = 89 ⋅62138789.

It is not a de Polignac number, because 1222530355 - 2⁷ = 1222530227 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122253031 + ... + 122253040.

It is an arithmetic number, because the mean of its divisors is an integer number (366759108).

Almost surely, 2^1222530355 is an apocalyptic number.

1222530355 is a deficient number, since it is larger than the sum of its proper divisors (244506077).

1222530355 is an equidigital number, since it uses as much as digits as its factorization.

1222530355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244506076.

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 1222530355 is about 34964.7015574279. The cubic root of 1222530355 is about 1069.2679521275.

Adding to 1222530355 its reverse (5530352221), we get a palindrome (6752882576).

The spelling of 1222530355 in words is "one billion, two hundred twenty-two million, five hundred thirty thousand, three hundred fifty-five".