22320421040 has 20 divisors (see below), whose sum is σ = 51894979104. Its totient is φ = 8928168384.

The previous prime is 22320421009. The next prime is 22320421043. The reversal of 22320421040 is 4012402322.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-3 number, since 3×22320421040³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (22320421043) 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, 139502552 + ... + 139502711.

Almost surely, 2^22320421040 is an apocalyptic number.

22320421040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22320421040 is an abundant number, since it is smaller than the sum of its proper divisors (29574558064).

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

22320421040 is a wasteful number, since it uses less digits than its factorization.

22320421040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279005276 (or 279005270 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 22320421040 its reverse (4012402322), we get a palindrome (26332823362).

The spelling of 22320421040 in words is "twenty-two billion, three hundred twenty million, four hundred twenty-one thousand, forty".