22021044040 has 32 divisors (see below), whose sum is σ = 49563937080. Its totient is φ = 8805468672.

The previous prime is 22021044011. The next prime is 22021044083. The reversal of 22021044040 is 4044012022.

It can be written as a sum of positive squares in 4 ways, for example, as 17759826756 + 4261217284 = 133266^2 + 65278^2 .

It is a super-2 number, since 2×22021044040² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22021043999 and 22021044017.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30844 + ... + 212116.

Almost surely, 2^22021044040 is an apocalyptic number.

22021044040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22021044040 is an abundant number, since it is smaller than the sum of its proper divisors (27542893040).

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

22021044040 is a wasteful number, since it uses less digits than its factorization.

22021044040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184321 (or 184317 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 22021044040 its reverse (4044012022), we get a palindrome (26065056062).

The spelling of 22021044040 in words is "twenty-two billion, twenty-one million, forty-four thousand, forty".