22021033320 has 384 divisors, whose sum is σ = 84917064960. Its totient is φ = 4878766080.

The previous prime is 22021033297. The next prime is 22021033339. The reversal of 22021033320 is 2333012022.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22021033293 and 22021033302.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5300364 + ... + 5304516.

It is an arithmetic number, because the mean of its divisors is an integer number (221138190).

Almost surely, 2^22021033320 is an apocalyptic number.

22021033320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22021033320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42458532480).

22021033320 is an abundant number, since it is smaller than the sum of its proper divisors (62896031640).

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

22021033320 is a wasteful number, since it uses less digits than its factorization.

22021033320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4297 (or 4290 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 22021033320 its reverse (2333012022), we get a palindrome (24354045342).

The spelling of 22021033320 in words is "twenty-two billion, twenty-one million, thirty-three thousand, three hundred twenty".