111221212100212 has 24 divisors (see below), whose sum is σ = 199164367556000. Its totient is φ = 54317117496096.

The previous prime is 111221212100197. The next prime is 111221212100261. The reversal of 111221212100212 is 212001212122111.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 111221212100212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46679239 + ... + 49004017.

Almost surely, 2^{111221212100212} is an apocalyptic number.

It is an amenable number.

111221212100212 is a deficient number, since it is larger than the sum of its proper divisors (87943155455788).

111221212100212 is a wasteful number, since it uses less digits than its factorization.

111221212100212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2602975 (or 2602973 counting only the distinct ones).

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

Adding to 111221212100212 its reverse (212001212122111), we get a palindrome (323222424222323).

The spelling of 111221212100212 in words is "one hundred eleven trillion, two hundred twenty-one billion, two hundred twelve million, one hundred thousand, two hundred twelve".