22621012240 has 40 divisors (see below), whose sum is σ = 53314330968. Its totient is φ = 8924451840.

The previous prime is 22621012223. The next prime is 22621012247. The reversal of 22621012240 is 4221012622.

It can be written as a sum of positive squares in 4 ways, for example, as 4696086784 + 17924925456 = 68528^2 + 133884^2 .

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

It is not an unprimeable number, because it can be changed into a prime (22621012247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1930891 + ... + 1942570.

Almost surely, 2^22621012240 is an apocalyptic number.

22621012240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22621012240 is an abundant number, since it is smaller than the sum of its proper divisors (30693318728).

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

22621012240 is a wasteful number, since it uses less digits than its factorization.

22621012240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3873547 (or 3873541 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 22621012240 its reverse (4221012622), we get a palindrome (26842024862).

The spelling of 22621012240 in words is "twenty-two billion, six hundred twenty-one million, twelve thousand, two hundred forty".