111121102022220 has 72 divisors (see below), whose sum is σ = 340159703803920. Its totient is φ = 29360437960320.

The previous prime is 111121102022141. The next prime is 111121102022243. The reversal of 111121102022220 is 22220201121111.

111121102022220 is a `hidden beast` number, since 111 + 121 + 10 + 202 + 2 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 111121102022193 and 111121102022202.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2831812746 + ... + 2831851985.

It is an arithmetic number, because the mean of its divisors is an integer number (4724440330610).

Almost surely, 2^{111121102022220} is an apocalyptic number.

111121102022220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111121102022220 is an abundant number, since it is smaller than the sum of its proper divisors (229038601781700).

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

111121102022220 is a wasteful number, since it uses less digits than its factorization.

111121102022220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5663664855 (or 5663664850 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 111121102022220 its reverse (22220201121111), we get a palindrome (133341303143331).

The spelling of 111121102022220 in words is "one hundred eleven trillion, one hundred twenty-one billion, one hundred two million, twenty-two thousand, two hundred twenty".