21013012322 has 8 divisors (see below), whose sum is σ = 31728257472. Its totient is φ = 10436926500.

The previous prime is 21013012253. The next prime is 21013012337. The reversal of 21013012322 is 22321031012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21013012322.

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, 34789454 + ... + 34790057.

It is an arithmetic number, because the mean of its divisors is an integer number (3966032184).

Almost surely, 2^21013012322 is an apocalyptic number.

21013012322 is a deficient number, since it is larger than the sum of its proper divisors (10715245150).

21013012322 is a wasteful number, since it uses less digits than its factorization.

21013012322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69579664.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21013012322 its reverse (22321031012), we get a palindrome (43334043334).

The spelling of 21013012322 in words is "twenty-one billion, thirteen million, twelve thousand, three hundred twenty-two".