22021103312 has 20 divisors (see below), whose sum is σ = 45947879460. Its totient is φ = 10163586048.

The previous prime is 22021103263. The next prime is 22021103329. The reversal of 22021103312 is 21330112022.

It can be written as a sum of positive squares in 2 ways, for example, as 3908250256 + 18112853056 = 62516^2 + 134584^2 .

It is a congruent number.

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, 52935137 + ... + 52935552.

It is an arithmetic number, because the mean of its divisors is an integer number (2297393973).

Almost surely, 2^22021103312 is an apocalyptic number.

It is an amenable number.

22021103312 is an abundant number, since it is smaller than the sum of its proper divisors (23926776148).

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

22021103312 is a wasteful number, since it uses less digits than its factorization.

22021103312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105870710 (or 105870704 counting only the distinct ones).

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

Adding to 22021103312 its reverse (21330112022), we get a palindrome (43351215334).

The spelling of 22021103312 in words is "twenty-two billion, twenty-one million, one hundred three thousand, three hundred twelve".