22044202100 has 72 divisors (see below), whose sum is σ = 49615183800. Its totient is φ = 8491302400.

The previous prime is 22044202099. The next prime is 22044202111. The reversal of 22044202100 is 120244022.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 11194063204 + 10850138896 = 105802^2 + 104164^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1118330 + ... + 1137870.

It is an arithmetic number, because the mean of its divisors is an integer number (689099775).

Almost surely, 2^22044202100 is an apocalyptic number.

22044202100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22044202100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24807591900).

22044202100 is an abundant number, since it is smaller than the sum of its proper divisors (27570981700).

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

22044202100 is a wasteful number, since it uses less digits than its factorization.

22044202100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19973 (or 19966 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 22044202100 its reverse (120244022), we get a palindrome (22164446122).

The spelling of 22044202100 in words is "twenty-two billion, forty-four million, two hundred two thousand, one hundred".