22220400004 has 48 divisors (see below), whose sum is σ = 44657101440. Its totient is φ = 9575498240.

The previous prime is 22220399959. The next prime is 22220400049. The reversal of 22220400004 is 40000402222.

It is an interprime number because it is at equal distance from previous prime (22220399959) and next prime (22220400049).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17202 + ... + 211510.

It is an arithmetic number, because the mean of its divisors is an integer number (930356280).

Almost surely, 2^22220400004 is an apocalyptic number.

It is an amenable number.

22220400004 is an abundant number, since it is smaller than the sum of its proper divisors (22436701436).

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

22220400004 is a wasteful number, since it uses less digits than its factorization.

22220400004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194460 (or 194458 counting only the distinct ones).

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

Adding to 22220400004 its reverse (40000402222), we get a palindrome (62220802226).

It can be divided in two parts, 22220 and 400004, that added together give a palindrome (422224).

The spelling of 22220400004 in words is "twenty-two billion, two hundred twenty million, four hundred thousand, four".