21200022332 has 6 divisors (see below), whose sum is σ = 37100039088. Its totient is φ = 10600011164.

The previous prime is 21200022301. The next prime is 21200022353. The reversal of 21200022332 is 23322000212.

It is a self number, because there is not a number n which added to its sum of digits gives 21200022332.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2650002788 + ... + 2650002795.

It is an arithmetic number, because the mean of its divisors is an integer number (6183339848).

Almost surely, 2^21200022332 is an apocalyptic number.

It is an amenable number.

21200022332 is a deficient number, since it is larger than the sum of its proper divisors (15900016756).

21200022332 is a wasteful number, since it uses less digits than its factorization.

21200022332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5300005587 (or 5300005585 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 21200022332 its reverse (23322000212), we get a palindrome (44522022544).

The spelling of 21200022332 in words is "twenty-one billion, two hundred million, twenty-two thousand, three hundred thirty-two".