22220220040 has 16 divisors (see below), whose sum is σ = 49995495180. Its totient is φ = 8888088000.

The previous prime is 22220220037. The next prime is 22220220059. The reversal of 22220220040 is 4002202222.

It can be written as a sum of positive squares in 2 ways, for example, as 22152750244 + 67469796 = 148838^2 + 8214^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22220219996 and 22220220023.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277752711 + ... + 277752790.

Almost surely, 2^22220220040 is an apocalyptic number.

22220220040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22220220040 is an abundant number, since it is smaller than the sum of its proper divisors (27775275140).

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

22220220040 is a wasteful number, since it uses less digits than its factorization.

22220220040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555505512 (or 555505508 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 22220220040 its reverse (4002202222), we get a palindrome (26222422262).

It can be divided in two parts, 222202 and 20040, that added together give a palindrome (242242).

The spelling of 22220220040 in words is "twenty-two billion, two hundred twenty million, two hundred twenty thousand, forty".