221120110111100 has 36 divisors (see below), whose sum is σ = 479843202001800. Its totient is φ = 88445728272960.

The previous prime is 221120110111003. The next prime is 221120110111133. The reversal of 221120110111100 is 1111011021122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25106135 + ... + 32749934.

Almost surely, 2^{221120110111100} is an apocalyptic number.

221120110111100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221120110111100 is an abundant number, since it is smaller than the sum of its proper divisors (258723091890700).

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

221120110111100 is a wasteful number, since it uses less digits than its factorization.

221120110111100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57894302 (or 57894295 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 221120110111100 its reverse (1111011021122), we get a palindrome (222231121132222).

The spelling of 221120110111100 in words is "two hundred twenty-one trillion, one hundred twenty billion, one hundred ten million, one hundred eleven thousand, one hundred".