22202403021 has 10 divisors (see below), whose sum is σ = 33166552782. Its totient is φ = 14801601960.

The previous prime is 22202402977. The next prime is 22202403031. The reversal of 22202403021 is 12030420222.

It can be written as a sum of positive squares in only one way, i.e., 21181600521 + 1020802500 = 145539^2 + 31950^2 .

It is not a de Polignac number, because 22202403021 - 2¹⁰ = 22202401997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22202402985 and 22202403003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22202403031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 137051790 + ... + 137051951.

Almost surely, 2^22202403021 is an apocalyptic number.

It is an amenable number.

22202403021 is a deficient number, since it is larger than the sum of its proper divisors (10964149761).

22202403021 is an equidigital number, since it uses as much as digits as its factorization.

22202403021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274103753 (or 274103744 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 22202403021 its reverse (12030420222), we get a palindrome (34232823243).

The spelling of 22202403021 in words is "twenty-two billion, two hundred two million, four hundred three thousand, twenty-one".