111110212000000 has 126 divisors (see below), whose sum is σ = 277229461065914. Its totient is φ = 44444083200000.

The previous prime is 111110211999979. The next prime is 111110212000001. The reversal of 111110212000000 is 212011111.

It can be written as a sum of positive squares in 7 ways, for example, as 108966541199616 + 2143670800384 = 10438704^2 + 1464128^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (111110212000001) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 9888777 + ... + 17888776.

Almost surely, 2^{111110212000000} is an apocalyptic number.

111110212000000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111110212000000 is an abundant number, since it is smaller than the sum of its proper divisors (166119249065914).

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

111110212000000 is an frugal number, since it uses more digits than its factorization.

111110212000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27777599 (or 27777560 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 111110212000000 its reverse (212011111), we get a palindrome (111110424011111).

The spelling of 111110212000000 in words is "one hundred eleven trillion, one hundred ten billion, two hundred twelve million", and thus it is an aban number.