21223203332 has 12 divisors (see below), whose sum is σ = 37141708800. Its totient is φ = 10611286536.

The previous prime is 21223203277. The next prime is 21223203373. The reversal of 21223203332 is 23330232212.

It is a junction number, because it is equal to n+sod(n) for n = 21223203298 and 21223203307.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140669 + ... + 249467.

It is an arithmetic number, because the mean of its divisors is an integer number (3095142400).

Almost surely, 2^21223203332 is an apocalyptic number.

It is an amenable number.

21223203332 is a deficient number, since it is larger than the sum of its proper divisors (15918505468).

21223203332 is a wasteful number, since it uses less digits than its factorization.

21223203332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157570 (or 157568 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 21223203332 its reverse (23330232212), we get a palindrome (44553435544).

The spelling of 21223203332 in words is "twenty-one billion, two hundred twenty-three million, two hundred three thousand, three hundred thirty-two".