100121021112220 has 24 divisors (see below), whose sum is σ = 211172284713600. Its totient is φ = 39873524563392.

The previous prime is 100121021112187. The next prime is 100121021112239. The reversal of 100121021112220 is 22211120121001.

It is a junction number, because it is equal to n+sod(n) for n = 100121021112194 and 100121021112203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10930237900 + ... + 10930247059.

It is an arithmetic number, because the mean of its divisors is an integer number (8798845196400).

Almost surely, 2^{100121021112220} is an apocalyptic number.

100121021112220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100121021112220 is an abundant number, since it is smaller than the sum of its proper divisors (111051263601380).

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

100121021112220 is a wasteful number, since it uses less digits than its factorization.

100121021112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21860485197 (or 21860485195 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 100121021112220 its reverse (22211120121001), we get a palindrome (122332141233221).

The spelling of 100121021112220 in words is "one hundred trillion, one hundred twenty-one billion, twenty-one million, one hundred twelve thousand, two hundred twenty".