22002103021 has 4 divisors (see below), whose sum is σ = 22596754492. Its totient is φ = 21407451552.

The previous prime is 22002102977. The next prime is 22002103033. The reversal of 22002103021 is 12030120022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19102280521 + 2899822500 = 138211^2 + 53850^2 .

It is a cyclic number.

It is not a de Polignac number, because 22002103021 - 2⁷ = 22002102893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22002102992 and 22002103010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22002163021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297325680 + ... + 297325753.

It is an arithmetic number, because the mean of its divisors is an integer number (5649188623).

Almost surely, 2^22002103021 is an apocalyptic number.

It is an amenable number.

22002103021 is a deficient number, since it is larger than the sum of its proper divisors (594651471).

22002103021 is an equidigital number, since it uses as much as digits as its factorization.

22002103021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594651470.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 22002103021 its reverse (12030120022), we get a palindrome (34032223043).

The spelling of 22002103021 in words is "twenty-two billion, two million, one hundred three thousand, twenty-one".