1222245452 has 24 divisors (see below), whose sum is σ = 2253968640. Its totient is φ = 578324880.

The previous prime is 1222245443. The next prime is 1222245469. The reversal of 1222245452 is 2545422221.

It is a happy number.

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, 65177 + ... + 81807.

It is an arithmetic number, because the mean of its divisors is an integer number (93915360).

Almost surely, 2^1222245452 is an apocalyptic number.

It is an amenable number.

1222245452 is a deficient number, since it is larger than the sum of its proper divisors (1031723188).

1222245452 is a wasteful number, since it uses less digits than its factorization.

1222245452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17621 (or 17619 counting only the distinct ones).

The product of its digits is 12800, while the sum is 29.

The square root of 1222245452 is about 34960.6271682875. The cubic root of 1222245452 is about 1069.1848836202.

Adding to 1222245452 its reverse (2545422221), we get a palindrome (3767667673).

The spelling of 1222245452 in words is "one billion, two hundred twenty-two million, two hundred forty-five thousand, four hundred fifty-two".