111312100020220 has 24 divisors (see below), whose sum is σ = 255005901865008. Its totient is φ = 40477127280000.

The previous prime is 111312100020119. The next prime is 111312100020221. The reversal of 111312100020220 is 22020001213111.

It is a super-2 number, since 2×111312100020220² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111312100020194 and 111312100020203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111312100020221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 252982045281 + ... + 252982045720.

It is an arithmetic number, because the mean of its divisors is an integer number (10625245911042).

Almost surely, 2^{111312100020220} is an apocalyptic number.

111312100020220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111312100020220 is an abundant number, since it is smaller than the sum of its proper divisors (143693801844788).

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

111312100020220 is a wasteful number, since it uses less digits than its factorization.

111312100020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505964091021 (or 505964091019 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 111312100020220 its reverse (22020001213111), we get a palindrome (133332101233331).

The spelling of 111312100020220 in words is "one hundred eleven trillion, three hundred twelve billion, one hundred million, twenty thousand, two hundred twenty".