111213201020 has 12 divisors (see below), whose sum is σ = 233547722184. Its totient is φ = 44485280400.

The previous prime is 111213201013. The next prime is 111213201061. The reversal of 111213201020 is 20102312111.

It is a super-2 number, since 2×111213201020² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111213200986 and 111213201004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2780330006 + ... + 2780330045.

It is an arithmetic number, because the mean of its divisors is an integer number (19462310182).

Almost surely, 2^111213201020 is an apocalyptic number.

111213201020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111213201020 is an abundant number, since it is smaller than the sum of its proper divisors (122334521164).

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

111213201020 is a wasteful number, since it uses less digits than its factorization.

111213201020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5560660060 (or 5560660058 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 111213201020 its reverse (20102312111), we get a palindrome (131315513131).

The spelling of 111213201020 in words is "one hundred eleven billion, two hundred thirteen million, two hundred one thousand, twenty".