111220021211112 has 128 divisors (see below), whose sum is σ = 337334280048000. Its totient is φ = 33672645457920.

The previous prime is 111220021211021. The next prime is 111220021211129. The reversal of 111220021211112 is 211112120022111.

It is a happy number.

111220021211112 is a `hidden beast` number, since 111 + 220 + 0 + 212 + 11 + 112 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18469513 + ... + 23739480.

It is an arithmetic number, because the mean of its divisors is an integer number (2635424062875).

Almost surely, 2^{111220021211112} is an apocalyptic number.

111220021211112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111220021211112 is an abundant number, since it is smaller than the sum of its proper divisors (226114258836888).

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

111220021211112 is a wasteful number, since it uses less digits than its factorization.

111220021211112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42210128 (or 42210118 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 111220021211112 its reverse (211112120022111), we get a palindrome (322332141233223).

The spelling of 111220021211112 in words is "one hundred eleven trillion, two hundred twenty billion, twenty-one million, two hundred eleven thousand, one hundred twelve".