21001112322 has 8 divisors (see below), whose sum is σ = 42002224656. Its totient is φ = 7000370772.

The previous prime is 21001112261. The next prime is 21001112339. The reversal of 21001112322 is 22321110012.

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

21001112322 is an admirable number.

It is a super-2 number, since 2×21001112322² (a number of 21 digits) contains 22 as substring.

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, 1750092688 + ... + 1750092699.

It is an arithmetic number, because the mean of its divisors is an integer number (5250278082).

Almost surely, 2^21001112322 is an apocalyptic number.

21001112322 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21001112322 is a wasteful number, since it uses less digits than its factorization.

21001112322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3500185392.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21001112322 its reverse (22321110012), we get a palindrome (43322222334).

The spelling of 21001112322 in words is "twenty-one billion, one million, one hundred twelve thousand, three hundred twenty-two".