22001102400 has 84 divisors (see below), whose sum is σ = 72181965872. Its totient is φ = 5866959360.

The previous prime is 22001102371. The next prime is 22001102401. The reversal of 22001102400 is 420110022.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (22001102401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2286982 + ... + 2296581.

Almost surely, 2^22001102400 is an apocalyptic number.

22001102400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22001102400 is an abundant number, since it is smaller than the sum of its proper divisors (50180863472).

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

22001102400 is a wasteful number, since it uses less digits than its factorization.

22001102400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4583588 (or 4583573 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 22001102400 its reverse (420110022), we get a palindrome (22421212422).

The spelling of 22001102400 in words is "twenty-two billion, one million, one hundred two thousand, four hundred".