22381867821 has 8 divisors (see below), whose sum is σ = 29850427584. Its totient is φ = 14917276640.

The previous prime is 22381867813. The next prime is 22381867831. The reversal of 22381867821 is 12876818322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22381867821 - 2³ = 22381867813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22381867831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 978960 + ... + 1001561.

It is an arithmetic number, because the mean of its divisors is an integer number (3731303448).

Almost surely, 2^22381867821 is an apocalyptic number.

It is an amenable number.

22381867821 is a deficient number, since it is larger than the sum of its proper divisors (7468559763).

22381867821 is a wasteful number, since it uses less digits than its factorization.

22381867821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1984291.

The product of its digits is 516096, while the sum is 48.

The spelling of 22381867821 in words is "twenty-two billion, three hundred eighty-one million, eight hundred sixty-seven thousand, eight hundred twenty-one".