1222797651 has 8 divisors (see below), whose sum is σ = 1632122304. Its totient is φ = 814335720.

The previous prime is 1222797619. The next prime is 1222797659. The reversal of 1222797651 is 1567972221.

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

It is not a de Polignac number, because 1222797651 - 2⁵ = 1222797619 is a prime.

It is a super-2 number, since 2×1222797651² = 2990468190582235602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1222797659) 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, 212365 + ... + 218046.

It is an arithmetic number, because the mean of its divisors is an integer number (204015288).

Almost surely, 2^1222797651 is an apocalyptic number.

1222797651 is a deficient number, since it is larger than the sum of its proper divisors (409324653).

1222797651 is an equidigital number, since it uses as much as digits as its factorization.

1222797651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431361.

The product of its digits is 105840, while the sum is 42.

The square root of 1222797651 is about 34968.5237177665. The cubic root of 1222797651 is about 1069.3458752694.

The spelling of 1222797651 in words is "one billion, two hundred twenty-two million, seven hundred ninety-seven thousand, six hundred fifty-one".