22221120002004 has 144 divisors (see below), whose sum is σ = 70041292339200. Its totient is φ = 5770804979520.

The previous prime is 22221120001981. The next prime is 22221120002021. The reversal of 22221120002004 is 40020002112222.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16950897 + ... + 18214695.

Almost surely, 2^{22221120002004} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22221120002004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35020646169600).

22221120002004 is an abundant number, since it is smaller than the sum of its proper divisors (47820172337196).

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

22221120002004 is a wasteful number, since it uses less digits than its factorization.

22221120002004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1270170 (or 1270165 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 22221120002004 its reverse (40020002112222), we get a palindrome (62241122114226).

The spelling of 22221120002004 in words is "twenty-two trillion, two hundred twenty-one billion, one hundred twenty million, two thousand, four".