111020321412 has 480 divisors, whose sum is σ = 393807025920. Its totient is φ = 26336378880.

The previous prime is 111020321411. The next prime is 111020321437. The reversal of 111020321412 is 214123020111.

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

It is not an unprimeable number, because it can be changed into a prime (111020321411) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 31457664 + ... + 31461192.

It is an arithmetic number, because the mean of its divisors is an integer number (820431304).

Almost surely, 2^111020321412 is an apocalyptic number.

111020321412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111020321412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196903512960).

111020321412 is an abundant number, since it is smaller than the sum of its proper divisors (282786704508).

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

111020321412 is a wasteful number, since it uses less digits than its factorization.

111020321412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3673 (or 3662 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 111020321412 its reverse (214123020111), we get a palindrome (325143341523).

The spelling of 111020321412 in words is "one hundred eleven billion, twenty million, three hundred twenty-one thousand, four hundred twelve".