121110100100220 has 192 divisors, whose sum is σ = 424598878319616. Its totient is φ = 25057727416320.

The previous prime is 121110100100201. The next prime is 121110100100261. The reversal of 121110100100220 is 22001001011121.

121110100100220 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 121110100100196 and 121110100100205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 55177419 + ... + 57330338.

It is an arithmetic number, because the mean of its divisors is an integer number (2211452491248).

Almost surely, 2^{121110100100220} is an apocalyptic number.

121110100100220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121110100100220 is an abundant number, since it is smaller than the sum of its proper divisors (303488778219396).

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

121110100100220 is a wasteful number, since it uses less digits than its factorization.

121110100100220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112508020 (or 112508018 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121110100100220 its reverse (22001001011121), we get a palindrome (143111101111341).

The spelling of 121110100100220 in words is "one hundred twenty-one trillion, one hundred ten billion, one hundred million, one hundred thousand, two hundred twenty".