22021112320 has 40 divisors (see below), whose sum is σ = 52799063724. Its totient is φ = 8808443904.

The previous prime is 22021112317. The next prime is 22021112327. The reversal of 22021112320 is 2321112022.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20273203456 + 1747908864 = 142384^2 + 41808^2 .

It is a tau number, because it is divible by the number of its divisors (40).

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

It is a junction number, because it is equal to n+sod(n) for n = 22021112294 and 22021112303.

It is not an unprimeable number, because it can be changed into a prime (22021112327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4298439 + ... + 4303558.

Almost surely, 2^22021112320 is an apocalyptic number.

22021112320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22021112320 is an abundant number, since it is smaller than the sum of its proper divisors (30777951404).

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

22021112320 is an frugal number, since it uses more digits than its factorization.

22021112320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8602020 (or 8602004 counting only the distinct ones).

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

Adding to 22021112320 its reverse (2321112022), we get a palindrome (24342224342).

The spelling of 22021112320 in words is "twenty-two billion, twenty-one million, one hundred twelve thousand, three hundred twenty".