869323837221 has 12 divisors (see below), whose sum is σ = 1435074271072. Its totient is φ = 496756478376.

The previous prime is 869323837183. The next prime is 869323837223. The reversal of 869323837221 is 122738323968.

869323837221 is a `hidden beast` number, since 8 + 6 + 9 + 32 + 383 + 7 + 221 = 666.

It is not a de Polignac number, because 869323837221 - 2⁷ = 869323837093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869323837223) 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, 6899395471 + ... + 6899395596.

Almost surely, 2^869323837221 is an apocalyptic number.

It is an amenable number.

869323837221 is a deficient number, since it is larger than the sum of its proper divisors (565750433851).

869323837221 is a wasteful number, since it uses less digits than its factorization.

869323837221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13798791080 (or 13798791077 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 54.

The spelling of 869323837221 in words is "eight hundred sixty-nine billion, three hundred twenty-three million, eight hundred thirty-seven thousand, two hundred twenty-one".