111101121020220 has 24 divisors (see below), whose sum is σ = 311083138856784. Its totient is φ = 29626965605376.

The previous prime is 111101121020213. The next prime is 111101121020249. The reversal of 111101121020220 is 22020121101111.

It is a happy number.

111101121020220 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 (15).

It is a self number, because there is not a number n which added to its sum of digits gives 111101121020220.

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, 925842675109 + ... + 925842675228.

It is an arithmetic number, because the mean of its divisors is an integer number (12961797452366).

Almost surely, 2^{111101121020220} is an apocalyptic number.

111101121020220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111101121020220 is an abundant number, since it is smaller than the sum of its proper divisors (199982017836564).

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

111101121020220 is a wasteful number, since it uses less digits than its factorization.

111101121020220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851685350349 (or 1851685350347 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111101121020220 its reverse (22020121101111), we get a palindrome (133121242121331).

The spelling of 111101121020220 in words is "one hundred eleven trillion, one hundred one billion, one hundred twenty-one million, twenty thousand, two hundred twenty".