1321366900 has 36 divisors (see below), whose sum is σ = 3276991648. Its totient is φ = 453039840.

The previous prime is 1321366867. The next prime is 1321366931. The reversal of 1321366900 is 96631231.

1321366900 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1321366900² = 3492020968831220000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 943134 + ... + 944533.

Almost surely, 2^1321366900 is an apocalyptic number.

1321366900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321366900 is an abundant number, since it is smaller than the sum of its proper divisors (1955624748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1321366900 is a wasteful number, since it uses less digits than its factorization.

1321366900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1887688 (or 1887681 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 1321366900 is about 36350.6107238929. The cubic root of 1321366900 is about 1097.3398254214.

The spelling of 1321366900 in words is "one billion, three hundred twenty-one million, three hundred sixty-six thousand, nine hundred".