100121221222200 has 96 divisors (see below), whose sum is σ = 344861984228400. Its totient is φ = 26698992324480.

The previous prime is 100121221222111. The next prime is 100121221222213. The reversal of 100121221222200 is 2222122121001.

It is a happy number.

100121221222200 is a `hidden beast` number, since 1 + 0 + 0 + 1 + 21 + 221 + 222 + 200 = 666.

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 23 ways as a sum of consecutive naturals, for example, 9270478047 + ... + 9270488846.

Almost surely, 2^{100121221222200} is an apocalyptic number.

100121221222200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100121221222200 is an abundant number, since it is smaller than the sum of its proper divisors (244740763006200).

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

100121221222200 is a wasteful number, since it uses less digits than its factorization.

100121221222200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18540966918 (or 18540966903 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 100121221222200 its reverse (2222122121001), we get a palindrome (102343343343201).

The spelling of 100121221222200 in words is "one hundred trillion, one hundred twenty-one billion, two hundred twenty-one million, two hundred twenty-two thousand, two hundred".