111103213012 has 72 divisors (see below), whose sum is σ = 218262560040. Its totient is φ = 49437696000.

The previous prime is 111103212977. The next prime is 111103213073. The reversal of 111103213012 is 210312301111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 58532060356 + 52571152656 = 241934^2 + 229284^2 .

It is a super-2 number, since 2×111103213012² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 4337908 + ... + 4363444.

It is an arithmetic number, because the mean of its divisors is an integer number (3031424445).

Almost surely, 2^111103213012 is an apocalyptic number.

It is an amenable number.

111103213012 is a deficient number, since it is larger than the sum of its proper divisors (107159347028).

111103213012 is a wasteful number, since it uses less digits than its factorization.

111103213012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25753 (or 25740 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 111103213012 its reverse (210312301111), we get a palindrome (321415514123).

The spelling of 111103213012 in words is "one hundred eleven billion, one hundred three million, two hundred thirteen thousand, twelve".