111211330020 has 72 divisors (see below), whose sum is σ = 362231198784. Its totient is φ = 25419731904.

The previous prime is 111211330019. The next prime is 111211330063. The reversal of 111211330020 is 20033112111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18910552 + ... + 18916431.

It is an arithmetic number, because the mean of its divisors is an integer number (5030988872).

Almost surely, 2^111211330020 is an apocalyptic number.

111211330020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111211330020 is an abundant number, since it is smaller than the sum of its proper divisors (251019868764).

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

111211330020 is a wasteful number, since it uses less digits than its factorization.

111211330020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37827009 (or 37827000 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 111211330020 its reverse (20033112111), we get a palindrome (131244442131).

The spelling of 111211330020 in words is "one hundred eleven billion, two hundred eleven million, three hundred thirty thousand, twenty".