111000000212 has 6 divisors (see below), whose sum is σ = 194250000378. Its totient is φ = 55500000104.

The previous prime is 111000000211. The next prime is 111000000217. The reversal of 111000000212 is 212000000111.

It can be written as a sum of positive squares in only one way, i.e., 77910207376 + 33089792836 = 279124^2 + 181906^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 111000000212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111000000211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13875000023 + ... + 13875000030.

It is an arithmetic number, because the mean of its divisors is an integer number (32375000063).

Almost surely, 2^111000000212 is an apocalyptic number.

It is an amenable number.

111000000212 is a deficient number, since it is larger than the sum of its proper divisors (83250000166).

111000000212 is a wasteful number, since it uses less digits than its factorization.

111000000212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27750000057 (or 27750000055 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 111000000212 its reverse (212000000111), we get a palindrome (323000000323).

The spelling of 111000000212 in words is "one hundred eleven billion, two hundred twelve", and thus it is an aban number.