1222752090 has 64 divisors (see below), whose sum is σ = 3359625984. Its totient is φ = 279003648.

The previous prime is 1222752031. The next prime is 1222752119. The reversal of 1222752090 is 902572221.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 124852 + ... + 134288.

It is an arithmetic number, because the mean of its divisors is an integer number (52494156).

Almost surely, 2^1222752090 is an apocalyptic number.

1222752090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222752090 is an abundant number, since it is smaller than the sum of its proper divisors (2136873894).

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

1222752090 is a wasteful number, since it uses less digits than its factorization.

1222752090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10071.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 1222752090 is about 34967.8722543995. The cubic root of 1222752090 is about 1069.3325939571.

The spelling of 1222752090 in words is "one billion, two hundred twenty-two million, seven hundred fifty-two thousand, ninety".