22001220204 has 48 divisors (see below), whose sum is σ = 51746688000. Its totient is φ = 7275222976.

The previous prime is 22001220187. The next prime is 22001220217. The reversal of 22001220204 is 40202210022.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1471237 + ... + 1486115.

It is an arithmetic number, because the mean of its divisors is an integer number (1078056000).

Almost surely, 2^22001220204 is an apocalyptic number.

It is an amenable number.

22001220204 is an abundant number, since it is smaller than the sum of its proper divisors (29745467796).

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

22001220204 is a wasteful number, since it uses less digits than its factorization.

22001220204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15862 (or 15860 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 22001220204 its reverse (40202210022), we get a palindrome (62203430226).

The spelling of 22001220204 in words is "twenty-two billion, one million, two hundred twenty thousand, two hundred four".