22202024021 has 16 divisors (see below), whose sum is σ = 24181497648. Its totient is φ = 20301619200.

The previous prime is 22202024017. The next prime is 22202024023. The reversal of 22202024021 is 12042020222.

It can be written as a sum of positive squares in 8 ways, for example, as 324360100 + 21877663921 = 18010^2 + 147911^2 .

It is a cyclic number.

It is not a de Polignac number, because 22202024021 - 2² = 22202024017 is a prime.

It is a super-2 number, since 2×22202024021² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22202024023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101891 + ... + 234063.

It is an arithmetic number, because the mean of its divisors is an integer number (1511343603).

Almost surely, 2^22202024021 is an apocalyptic number.

It is an amenable number.

22202024021 is a deficient number, since it is larger than the sum of its proper divisors (1979473627).

22202024021 is a wasteful number, since it uses less digits than its factorization.

22202024021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132472.

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 22202024021 its reverse (12042020222), we get a palindrome (34244044243).

The spelling of 22202024021 in words is "twenty-two billion, two hundred two million, twenty-four thousand, twenty-one".