1222215663 has 8 divisors (see below), whose sum is σ = 1725481008. Its totient is φ = 766880384.

The previous prime is 1222215619. The next prime is 1222215667. The reversal of 1222215663 is 3665122221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1222215663 - 2⁹ = 1222215151 is a prime.

It is a super-2 number, since 2×1222215663² = 2987622253765059138, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1222215663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222215667) 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, 11982456 + ... + 11982557.

It is an arithmetic number, because the mean of its divisors is an integer number (215685126).

Almost surely, 2^1222215663 is an apocalyptic number.

1222215663 is a deficient number, since it is larger than the sum of its proper divisors (503265345).

1222215663 is a wasteful number, since it uses less digits than its factorization.

1222215663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23965033.

The product of its digits is 8640, while the sum is 30.

The square root of 1222215663 is about 34960.2011292841. The cubic root of 1222215663 is about 1069.1761973651.

Adding to 1222215663 its reverse (3665122221), we get a palindrome (4887337884).

The spelling of 1222215663 in words is "one billion, two hundred twenty-two million, two hundred fifteen thousand, six hundred sixty-three".