111321040020 has 48 divisors (see below), whose sum is σ = 316351146048. Its totient is φ = 29242540800.

The previous prime is 111321040013. The next prime is 111321040043. The reversal of 111321040020 is 20040123111.

It is a super-2 number, since 2×111321040020² (a number of 23 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13841881 + ... + 13849920.

It is an arithmetic number, because the mean of its divisors is an integer number (6590648876).

Almost surely, 2^111321040020 is an apocalyptic number.

111321040020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111321040020 is an abundant number, since it is smaller than the sum of its proper divisors (205030106028).

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

111321040020 is a wasteful number, since it uses less digits than its factorization.

111321040020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27691880 (or 27691878 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 111321040020 its reverse (20040123111), we get a palindrome (131361163131).

The spelling of 111321040020 in words is "one hundred eleven billion, three hundred twenty-one million, forty thousand, twenty".