1296863222 has 4 divisors (see below), whose sum is σ = 1945294836. Its totient is φ = 648431610.

The previous prime is 1296863213. The next prime is 1296863237. The reversal of 1296863222 is 2223686921.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1296863222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324215804 + ... + 324215807.

It is an arithmetic number, because the mean of its divisors is an integer number (486323709).

Almost surely, 2^1296863222 is an apocalyptic number.

1296863222 is a deficient number, since it is larger than the sum of its proper divisors (648431614).

1296863222 is an equidigital number, since it uses as much as digits as its factorization.

1296863222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648431613.

The product of its digits is 124416, while the sum is 41.

The square root of 1296863222 is about 36011.9871987093. The cubic root of 1296863222 is about 1090.5143665545.

The spelling of 1296863222 in words is "one billion, two hundred ninety-six million, eight hundred sixty-three thousand, two hundred twenty-two".