111211102120030 has 64 divisors (see below), whose sum is σ = 224467521547968. Its totient is φ = 39326246901760.

The previous prime is 111211102120021. The next prime is 111211102120061. The reversal of 111211102120030 is 30021201112111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 111211102119986 and 111211102120013.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83746789 + ... + 85064368.

It is an arithmetic number, because the mean of its divisors is an integer number (3507305024187).

Almost surely, 2^{111211102120030} is an apocalyptic number.

111211102120030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111211102120030 is an abundant number, since it is smaller than the sum of its proper divisors (113256419427938).

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

111211102120030 is a wasteful number, since it uses less digits than its factorization.

111211102120030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168811341.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 111211102120030 its reverse (30021201112111), we get a palindrome (141232303232141).

The spelling of 111211102120030 in words is "one hundred eleven trillion, two hundred eleven billion, one hundred two million, one hundred twenty thousand, thirty".