111211313012 has 12 divisors (see below), whose sum is σ = 197285822916. Its totient is φ = 54843935040.

The previous prime is 111211312987. The next prime is 111211313021. The reversal of 111211313012 is 210313112111.

It can be written as a sum of positive squares in 2 ways, for example, as 60714931216 + 50496381796 = 246404^2 + 224714^2 .

It is a super-2 number, since 2×111211313012² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190430039 + ... + 190430622.

It is an arithmetic number, because the mean of its divisors is an integer number (16440485243).

Almost surely, 2^111211313012 is an apocalyptic number.

It is an amenable number.

111211313012 is a deficient number, since it is larger than the sum of its proper divisors (86074509904).

111211313012 is a wasteful number, since it uses less digits than its factorization.

111211313012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380860738 (or 380860736 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 111211313012 its reverse (210313112111), we get a palindrome (321524425123).

The spelling of 111211313012 in words is "one hundred eleven billion, two hundred eleven million, three hundred thirteen thousand, twelve".