111212222011012 has 24 divisors (see below), whose sum is σ = 200213088655104. Its totient is φ = 54025754056512.

The previous prime is 111212222010983. The next prime is 111212222011013. The reversal of 111212222011012 is 210110222212111.

It is a happy number.

111212222011012 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (111212222011013) 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, 2158931808 + ... + 2158983319.

It is an arithmetic number, because the mean of its divisors is an integer number (8342212027296).

Almost surely, 2^{111212222011012} is an apocalyptic number.

It is an amenable number.

111212222011012 is a deficient number, since it is larger than the sum of its proper divisors (89000866644092).

111212222011012 is a wasteful number, since it uses less digits than its factorization.

111212222011012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4317915315 (or 4317915313 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 111212222011012 its reverse (210110222212111), we get a palindrome (321322444223123).

The spelling of 111212222011012 in words is "one hundred eleven trillion, two hundred twelve billion, two hundred twenty-two million, eleven thousand, twelve".