1222455912 has 32 divisors (see below), whose sum is σ = 3085817280. Its totient is φ = 403528320.

The previous prime is 1222455893. The next prime is 1222455917. The reversal of 1222455912 is 2195542221.

It is not an unprimeable number, because it can be changed into a prime (1222455917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244789 + ... + 249732.

It is an arithmetic number, because the mean of its divisors is an integer number (96431790).

Almost surely, 2^1222455912 is an apocalyptic number.

1222455912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1222455912 is an abundant number, since it is smaller than the sum of its proper divisors (1863361368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222455912 is a wasteful number, since it uses less digits than its factorization.

1222455912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494633 (or 494629 counting only the distinct ones).

The product of its digits is 14400, while the sum is 33.

The square root of 1222455912 is about 34963.6369961708. The cubic root of 1222455912 is about 1069.2462482002.

The spelling of 1222455912 in words is "one billion, two hundred twenty-two million, four hundred fifty-five thousand, nine hundred twelve".