11111112201212 has 12 divisors (see below), whose sum is σ = 19444560460416. Its totient is φ = 5555523498240.

The previous prime is 11111112201197. The next prime is 11111112201257. The reversal of 11111112201212 is 21210221111111.

11111112201212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7375589 + ... + 8753372.

It is an arithmetic number, because the mean of its divisors is an integer number (1620380038368).

Almost surely, 2^{11111112201212} is an apocalyptic number.

It is an amenable number.

11111112201212 is a deficient number, since it is larger than the sum of its proper divisors (8333448259204).

11111112201212 is a wasteful number, since it uses less digits than its factorization.

11111112201212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16301188 (or 16301186 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 11111112201212 its reverse (21210221111111), we get a palindrome (32321333312323).

The spelling of 11111112201212 in words is "eleven trillion, one hundred eleven billion, one hundred twelve million, two hundred one thousand, two hundred twelve".