1222154434 has 16 divisors (see below), whose sum is σ = 1858067640. Its totient is φ = 602847360.

The previous prime is 1222154389. The next prime is 1222154441. The reversal of 1222154434 is 4344512221.

It can be written as a sum of positive squares in 4 ways, for example, as 1210831209 + 11323225 = 34797^2 + 3365^2 .

It is a super-2 number, since 2×1222154434² = 2987322921091720712, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38764 + ... + 62824.

Almost surely, 2^1222154434 is an apocalyptic number.

1222154434 is a deficient number, since it is larger than the sum of its proper divisors (635913206).

1222154434 is a wasteful number, since it uses less digits than its factorization.

1222154434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24405.

The product of its digits is 7680, while the sum is 28.

The square root of 1222154434 is about 34959.3254225536. The cubic root of 1222154434 is about 1069.1583429923.

Adding to 1222154434 its reverse (4344512221), we get a palindrome (5566666655).

The spelling of 1222154434 in words is "one billion, two hundred twenty-two million, one hundred fifty-four thousand, four hundred thirty-four".