111203121012 has 24 divisors (see below), whose sum is σ = 267844077312. Its totient is φ = 35871974400.

The previous prime is 111203120993. The next prime is 111203121019. The reversal of 111203121012 is 210121302111.

111203121012 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×111203121012² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111203120982 and 111203121000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111203121019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149466189 + ... + 149466932.

It is an arithmetic number, because the mean of its divisors is an integer number (11160169888).

Almost surely, 2^111203121012 is an apocalyptic number.

111203121012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111203121012 is an abundant number, since it is smaller than the sum of its proper divisors (156640956300).

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

111203121012 is a wasteful number, since it uses less digits than its factorization.

111203121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298933159 (or 298933157 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 111203121012 its reverse (210121302111), we get a palindrome (321324423123).

The spelling of 111203121012 in words is "one hundred eleven billion, two hundred three million, one hundred twenty-one thousand, twelve".