1222861456 has 20 divisors (see below), whose sum is σ = 2381704704. Its totient is φ = 608228000.

The previous prime is 1222861429. The next prime is 1222861457. The reversal of 1222861456 is 6541682221.

It is not an unprimeable number, because it can be changed into a prime (1222861457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197020 + ... + 203131.

Almost surely, 2^1222861456 is an apocalyptic number.

1222861456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1222861456 is a deficient number, since it is larger than the sum of its proper divisors (1158843248).

1222861456 is a wasteful number, since it uses less digits than its factorization.

1222861456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400350 (or 400344 counting only the distinct ones).

The product of its digits is 46080, while the sum is 37.

The square root of 1222861456 is about 34969.4360263359. The cubic root of 1222861456 is about 1069.3644742657.

The spelling of 1222861456 in words is "one billion, two hundred twenty-two million, eight hundred sixty-one thousand, four hundred fifty-six".