21202442322 has 24 divisors (see below), whose sum is σ = 43414001424. Its totient is φ = 6903117144.

The previous prime is 21202442273. The next prime is 21202442341. The reversal of 21202442322 is 22324420212.

It is a junction number, because it is equal to n+sod(n) for n = 21202442292 and 21202442301.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 944488 + ... + 966675.

It is an arithmetic number, because the mean of its divisors is an integer number (1808916726).

Almost surely, 2^21202442322 is an apocalyptic number.

21202442322 is an abundant number, since it is smaller than the sum of its proper divisors (22211559102).

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

21202442322 is a wasteful number, since it uses less digits than its factorization.

21202442322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1911254 (or 1911211 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 21202442322 its reverse (22324420212), we get a palindrome (43526862534).

It can be divided in two parts, 2120 and 2442322, that added together give a palindrome (2444442).

The spelling of 21202442322 in words is "twenty-one billion, two hundred two million, four hundred forty-two thousand, three hundred twenty-two".