1222667520 has 72 divisors (see below), whose sum is σ = 3904906656. Its totient is φ = 326043648.

The previous prime is 1222667513. The next prime is 1222667527. The reversal of 1222667520 is 257662221.

It is an interprime number because it is at equal distance from previous prime (1222667513) and next prime (1222667527).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222667527) 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, 155362 + ... + 163041.

Almost surely, 2^1222667520 is an apocalyptic number.

1222667520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222667520 is an abundant number, since it is smaller than the sum of its proper divisors (2682239136).

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

1222667520 is an equidigital number, since it uses as much as digits as its factorization.

1222667520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318427 (or 318413 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 1222667520 is about 34966.6629806163. The cubic root of 1222667520 is about 1069.3079404062.

The spelling of 1222667520 in words is "one billion, two hundred twenty-two million, six hundred sixty-seven thousand, five hundred twenty".