22220440020400 has 60 divisors (see below), whose sum is σ = 53496057729600. Its totient is φ = 8869620240640.

The previous prime is 22220440020367. The next prime is 22220440020461. The reversal of 22220440020400 is 402004402222.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57794935 + ... + 58178134.

It is an arithmetic number, because the mean of its divisors is an integer number (891600962160).

Almost surely, 2^{22220440020400} is an apocalyptic number.

22220440020400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22220440020400 is an abundant number, since it is smaller than the sum of its proper divisors (31275617709200).

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

22220440020400 is a wasteful number, since it uses less digits than its factorization.

22220440020400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115973566 (or 115973555 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 22220440020400 its reverse (402004402222), we get a palindrome (22622444422622).

The spelling of 22220440020400 in words is "twenty-two trillion, two hundred twenty billion, four hundred forty million, twenty thousand, four hundred".