1111213211212 has 24 divisors (see below), whose sum is σ = 2133722905776. Its totient is φ = 503190886848.

The previous prime is 1111213211183. The next prime is 1111213211219. The reversal of 1111213211212 is 2121123121111.

It is a self number, because there is not a number n which added to its sum of digits gives 1111213211212.

It is not an unprimeable number, because it can be changed into a prime (1111213211219) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 201596158 + ... + 201601669.

It is an arithmetic number, because the mean of its divisors is an integer number (88905121074).

Almost surely, 2^{1111213211212} is an apocalyptic number.

It is an amenable number.

1111213211212 is a deficient number, since it is larger than the sum of its proper divisors (1022509694564).

1111213211212 is a wasteful number, since it uses less digits than its factorization.

1111213211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403197897 (or 403197895 counting only the distinct ones).

The product of its digits is 48, while the sum is 19.

Adding to 1111213211212 its reverse (2121123121111), we get a palindrome (3232336332323).

The spelling of 1111213211212 in words is "one trillion, one hundred eleven billion, two hundred thirteen million, two hundred eleven thousand, two hundred twelve".