121111100200220 has 24 divisors (see below), whose sum is σ = 273897411222624. Its totient is φ = 44717944689216.

The previous prime is 121111100200219. The next prime is 121111100200289. The reversal of 121111100200220 is 22002001111121.

It is a junction number, because it is equal to n+sod(n) for n = 121111100200195 and 121111100200204.

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, 232905961664 + ... + 232905962183.

It is an arithmetic number, because the mean of its divisors is an integer number (11412392134276).

Almost surely, 2^{121111100200220} is an apocalyptic number.

121111100200220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121111100200220 is an abundant number, since it is smaller than the sum of its proper divisors (152786311022404).

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

121111100200220 is a wasteful number, since it uses less digits than its factorization.

121111100200220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465811923869 (or 465811923867 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121111100200220 its reverse (22002001111121), we get a palindrome (143113101311341).

The spelling of 121111100200220 in words is "one hundred twenty-one trillion, one hundred eleven billion, one hundred million, two hundred thousand, two hundred twenty".