22020321021 has 8 divisors (see below), whose sum is σ = 29499577824. Its totient is φ = 14610639120.

The previous prime is 22020321019. The next prime is 22020321061. The reversal of 22020321021 is 12012302022.

It is a happy number.

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

It is not a de Polignac number, because 22020321021 - 2¹ = 22020321019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22020321061) 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, 17392986 + ... + 17394251.

It is an arithmetic number, because the mean of its divisors is an integer number (3687447228).

Almost surely, 2^22020321021 is an apocalyptic number.

It is an amenable number.

22020321021 is a deficient number, since it is larger than the sum of its proper divisors (7479256803).

22020321021 is a wasteful number, since it uses less digits than its factorization.

22020321021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34787451.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 22020321021 its reverse (12012302022), we get a palindrome (34032623043).

The spelling of 22020321021 in words is "twenty-two billion, twenty million, three hundred twenty-one thousand, twenty-one".