1321167897 has 12 divisors (see below), whose sum is σ = 2180975680. Its totient is φ = 754953048.

The previous prime is 1321167871. The next prime is 1321167901. The reversal of 1321167897 is 7987611231.

It is not a de Polignac number, because 1321167897 - 2⁶ = 1321167833 is a prime.

It is a super-2 number, since 2×1321167897² = 3490969224126805218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321167847) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10485397 + ... + 10485522.

Almost surely, 2^1321167897 is an apocalyptic number.

It is an amenable number.

1321167897 is a deficient number, since it is larger than the sum of its proper divisors (859807783).

1321167897 is a wasteful number, since it uses less digits than its factorization.

1321167897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20970932 (or 20970929 counting only the distinct ones).

The product of its digits is 127008, while the sum is 45.

The square root of 1321167897 is about 36347.8733490695. The cubic root of 1321167897 is about 1097.2847347723.

The spelling of 1321167897 in words is "one billion, three hundred twenty-one million, one hundred sixty-seven thousand, eight hundred ninety-seven".