1222664080 has 80 divisors (see below), whose sum is σ = 3153816000. Its totient is φ = 437050880.

The previous prime is 1222664077. The next prime is 1222664081. The reversal of 1222664080 is 804662221.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (1222664081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40146 + ... + 63694.

It is an arithmetic number, because the mean of its divisors is an integer number (39422700).

Almost surely, 2^1222664080 is an apocalyptic number.

1222664080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222664080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1576908000).

1222664080 is an abundant number, since it is smaller than the sum of its proper divisors (1931151920).

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

1222664080 is a wasteful number, since it uses less digits than its factorization.

1222664080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23632 (or 23626 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 1222664080 is about 34966.6137908720. The cubic root of 1222664080 is about 1069.3069375654.

The spelling of 1222664080 in words is "one billion, two hundred twenty-two million, six hundred sixty-four thousand, eighty".