21002322112 has 28 divisors (see below), whose sum is σ = 41696493696. Its totient is φ = 10496119040.

The previous prime is 21002322109. The next prime is 21002322127. The reversal of 21002322112 is 21122320012.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57378 + ... + 212830.

Almost surely, 2^21002322112 is an apocalyptic number.

It is an amenable number.

21002322112 is a deficient number, since it is larger than the sum of its proper divisors (20694171584).

21002322112 is a wasteful number, since it uses less digits than its factorization.

21002322112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157576 (or 157566 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21002322112 its reverse (21122320012), we get a palindrome (42124642124).

The spelling of 21002322112 in words is "twenty-one billion, two million, three hundred twenty-two thousand, one hundred twelve".