1321010996 has 6 divisors (see below), whose sum is σ = 2311769250. Its totient is φ = 660505496.

The previous prime is 1321010989. The next prime is 1321011011. The reversal of 1321010996 is 6990101231.

It can be written as a sum of positive squares in only one way, i.e., 1314062500 + 6948496 = 36250^2 + 2636^2 .

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, 165126371 + ... + 165126378.

It is an arithmetic number, because the mean of its divisors is an integer number (385294875).

Almost surely, 2^1321010996 is an apocalyptic number.

It is an amenable number.

1321010996 is a deficient number, since it is larger than the sum of its proper divisors (990758254).

1321010996 is a wasteful number, since it uses less digits than its factorization.

1321010996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330252753 (or 330252751 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 1321010996 is about 36345.7149606388. The cubic root of 1321010996 is about 1097.2412954566.

The spelling of 1321010996 in words is "one billion, three hundred twenty-one million, ten thousand, nine hundred ninety-six".