111213021012030 has 192 divisors, whose sum is σ = 347892493478400. Its totient is φ = 24079571239680.

The previous prime is 111213021012001. The next prime is 111213021012083. The reversal of 111213021012030 is 30210120312111.

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 = 111213021011994 and 111213021012012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 109390581 + ... + 110402559.

It is an arithmetic number, because the mean of its divisors is an integer number (1811940070200).

Almost surely, 2^{111213021012030} is an apocalyptic number.

111213021012030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 111213021012030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173946246739200).

111213021012030 is an abundant number, since it is smaller than the sum of its proper divisors (236679472466370).

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

111213021012030 is a wasteful number, since it uses less digits than its factorization.

111213021012030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021199 (or 1021196 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 111213021012030 its reverse (30210120312111), we get a palindrome (141423141324141).

The spelling of 111213021012030 in words is "one hundred eleven trillion, two hundred thirteen billion, twenty-one million, twelve thousand, thirty".