1296115222 has 4 divisors (see below), whose sum is σ = 1944172836. Its totient is φ = 648057610.

The previous prime is 1296115211. The next prime is 1296115237. The reversal of 1296115222 is 2225116921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2225116921 = 23339 ⋅95339.

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, 324028804 + ... + 324028807.

It is an arithmetic number, because the mean of its divisors is an integer number (486043209).

Almost surely, 2^1296115222 is an apocalyptic number.

1296115222 is a deficient number, since it is larger than the sum of its proper divisors (648057614).

1296115222 is an equidigital number, since it uses as much as digits as its factorization.

1296115222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648057613.

The product of its digits is 4320, while the sum is 31.

The square root of 1296115222 is about 36001.6002699880. The cubic root of 1296115222 is about 1090.3046652771.

The spelling of 1296115222 in words is "one billion, two hundred ninety-six million, one hundred fifteen thousand, two hundred twenty-two".