21303002022 has 64 divisors (see below), whose sum is σ = 45990125568. Its totient is φ = 6554240000.

The previous prime is 21303001957. The next prime is 21303002041. The reversal of 21303002022 is 22020030312.

It is a junction number, because it is equal to n+sod(n) for n = 21303001992 and 21303002010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1375522 + ... + 1390922.

It is an arithmetic number, because the mean of its divisors is an integer number (718595712).

Almost surely, 2^21303002022 is an apocalyptic number.

21303002022 is an abundant number, since it is smaller than the sum of its proper divisors (24687123546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21303002022 is a wasteful number, since it uses less digits than its factorization.

21303002022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15685.

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 21303002022 its reverse (22020030312), we get a palindrome (43323032334).

The spelling of 21303002022 in words is "twenty-one billion, three hundred three million, two thousand, twenty-two".