22021032321 has 24 divisors (see below), whose sum is σ = 32261370336. Its totient is φ = 14471732160.

The previous prime is 22021032317. The next prime is 22021032353. The reversal of 22021032321 is 12323012022.

22021032321 is a `hidden beast` number, since 220 + 210 + 3 + 232 + 1 = 666.

It is not a de Polignac number, because 22021032321 - 2² = 22021032317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22021032294 and 22021032303.

It is not an unprimeable number, because it can be changed into a prime (22021032361) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1360486 + ... + 1376576.

It is an arithmetic number, because the mean of its divisors is an integer number (1344223764).

Almost surely, 2^22021032321 is an apocalyptic number.

It is an amenable number.

22021032321 is a deficient number, since it is larger than the sum of its proper divisors (10240338015).

22021032321 is a wasteful number, since it uses less digits than its factorization.

22021032321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18253 (or 18250 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 22021032321 its reverse (12323012022), we get a palindrome (34344044343).

The spelling of 22021032321 in words is "twenty-two billion, twenty-one million, thirty-two thousand, three hundred twenty-one".