1222140992 has 56 divisors (see below), whose sum is σ = 2479194432. Its totient is φ = 597542400.

The previous prime is 1222140989. The next prime is 1222141001. The reversal of 1222140992 is 2990412221.

It is a Harshad number since it is a multiple of its sum of digits (32).

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, 1936517 + ... + 1937147.

Almost surely, 2^1222140992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222140992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1239597216).

1222140992 is an abundant number, since it is smaller than the sum of its proper divisors (1257053440).

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

1222140992 is an equidigital number, since it uses as much as digits as its factorization.

1222140992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267 (or 1257 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 1222140992 is about 34959.1331700315. The cubic root of 1222140992 is about 1069.1544232260.

The spelling of 1222140992 in words is "one billion, two hundred twenty-two million, one hundred forty thousand, nine hundred ninety-two".