1111111201212 has 24 divisors (see below), whose sum is σ = 2606166592512. Its totient is φ = 368431287600.

The previous prime is 1111111201181. The next prime is 1111111201247. The reversal of 1111111201212 is 2121021111111.

It is a junction number, because it is equal to n+sod(n) for n = 1111111201191 and 1111111201200.

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, 242386714 + ... + 242391297.

It is an arithmetic number, because the mean of its divisors is an integer number (108590274688).

Almost surely, 2^{1111111201212} is an apocalyptic number.

1111111201212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1111111201212 is an abundant number, since it is smaller than the sum of its proper divisors (1495055391300).

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

1111111201212 is a wasteful number, since it uses less digits than its factorization.

1111111201212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484778209 (or 484778207 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 1111111201212 its reverse (2121021111111), we get a palindrome (3232132312323).

The spelling of 1111111201212 in words is "one trillion, one hundred eleven billion, one hundred eleven million, two hundred one thousand, two hundred twelve".