21000233322 has 48 divisors (see below), whose sum is σ = 48707100000. Its totient is φ = 6519245472.

The previous prime is 21000233291. The next prime is 21000233351. The reversal of 21000233322 is 22333200012.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 21000233295 and 21000233304.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 500197 + ... + 540552.

It is an arithmetic number, because the mean of its divisors is an integer number (1014731250).

Almost surely, 2^21000233322 is an apocalyptic number.

21000233322 is an abundant number, since it is smaller than the sum of its proper divisors (27706866678).

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

21000233322 is a wasteful number, since it uses less digits than its factorization.

21000233322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040835 (or 1040832 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 21000233322 its reverse (22333200012), we get a palindrome (43333433334).

The spelling of 21000233322 in words is "twenty-one billion, two hundred thirty-three thousand, three hundred twenty-two".