22021001200100 has 72 divisors (see below), whose sum is σ = 54658093533120. Its totient is φ = 7543696648320.

The previous prime is 22021001200091. The next prime is 22021001200103. The reversal of 22021001200100 is 100210012022.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22021001200103) by changing a digit.

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, 12420395 + ... + 14082194.

It is an arithmetic number, because the mean of its divisors is an integer number (759140187960).

Almost surely, 2^{22021001200100} is an apocalyptic number.

22021001200100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22021001200100 is an abundant number, since it is smaller than the sum of its proper divisors (32637092333020).

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

22021001200100 is a wasteful number, since it uses less digits than its factorization.

22021001200100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26503797 (or 26503790 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 22021001200100 its reverse (100210012022), we get a palindrome (22121211212122).

The spelling of 22021001200100 in words is "twenty-two trillion, twenty-one billion, one million, two hundred thousand, one hundred".