1222244690 has 16 divisors (see below), whose sum is σ = 2204821080. Its totient is φ = 487835520.

The previous prime is 1222244687. The next prime is 1222244731. The reversal of 1222244690 is 964422221.

It can be written as a sum of positive squares in 4 ways, for example, as 1033429609 + 188815081 = 32147^2 + 13741^2 .

It is a super-2 number, since 2×1222244690² = 2987764164466392200, which contains 22 as substring.

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, 127955 + ... + 137174.

Almost surely, 2^1222244690 is an apocalyptic number.

1222244690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222244690 is a deficient number, since it is larger than the sum of its proper divisors (982576390).

1222244690 is a wasteful number, since it uses less digits than its factorization.

1222244690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265597.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 1222244690 is about 34960.6162703119. The cubic root of 1222244690 is about 1069.1846614283.

The spelling of 1222244690 in words is "one billion, two hundred twenty-two million, two hundred forty-four thousand, six hundred ninety".