21503432022 has 64 divisors (see below), whose sum is σ = 45916222464. Its totient is φ = 6690145280.

The previous prime is 21503432009. The next prime is 21503432023. The reversal of 21503432022 is 22023430512.

It is a junction number, because it is equal to n+sod(n) for n = 21503431983 and 21503432001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21503432023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8873503 + ... + 8875925.

It is an arithmetic number, because the mean of its divisors is an integer number (717440976).

Almost surely, 2^21503432022 is an apocalyptic number.

21503432022 is an abundant number, since it is smaller than the sum of its proper divisors (24412790442).

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

21503432022 is a wasteful number, since it uses less digits than its factorization.

21503432022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3133.

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 21503432022 its reverse (22023430512), we get a palindrome (43526862534).

The spelling of 21503432022 in words is "twenty-one billion, five hundred three million, four hundred thirty-two thousand, twenty-two".