22021433021 has 16 divisors (see below), whose sum is σ = 26724629376. Its totient is φ = 17713959936.

The previous prime is 22021432973. The next prime is 22021433047. The reversal of 22021433021 is 12033412022.

It is a cyclic number.

It is not a de Polignac number, because 22021433021 - 2⁶ = 22021432957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22021432984 and 22021433002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021433221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225356 + ... + 307941.

It is an arithmetic number, because the mean of its divisors is an integer number (1670289336).

Almost surely, 2^22021433021 is an apocalyptic number.

It is an amenable number.

22021433021 is a deficient number, since it is larger than the sum of its proper divisors (4703196355).

22021433021 is a wasteful number, since it uses less digits than its factorization.

22021433021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533668.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 22021433021 its reverse (12033412022), we get a palindrome (34054845043).

The spelling of 22021433021 in words is "twenty-two billion, twenty-one million, four hundred thirty-three thousand, twenty-one".