111121202012220 has 144 divisors (see below), whose sum is σ = 357344601938688. Its totient is φ = 27901400279040.

The previous prime is 111121202012207. The next prime is 111121202012279. The reversal of 111121202012220 is 22210202121111.

111121202012220 is a `hidden beast` number, since 11 + 112 + 120 + 201 + 2 + 220 = 666.

111121202012220 is digitally balanced in base 3, 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 (18).

It is a junction number, because it is equal to n+sod(n) for n = 111121202012193 and 111121202012202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 268904269 + ... + 269317188.

Almost surely, 2^{111121202012220} is an apocalyptic number.

111121202012220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111121202012220 is an abundant number, since it is smaller than the sum of its proper divisors (246223399926468).

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

111121202012220 is a wasteful number, since it uses less digits than its factorization.

111121202012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538221540 (or 538221535 counting only the distinct ones).

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

Adding to 111121202012220 its reverse (22210202121111), we get a palindrome (133331404133331).

The spelling of 111121202012220 in words is "one hundred eleven trillion, one hundred twenty-one billion, two hundred two million, twelve thousand, two hundred twenty".