1101111221212 has 6 divisors (see below), whose sum is σ = 1926944637128. Its totient is φ = 550555610604.

The previous prime is 1101111221201. The next prime is 1101111221261. The reversal of 1101111221212 is 2121221111011.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 137638902648 + ... + 137638902655.

Almost surely, 2^{1101111221212} is an apocalyptic number.

It is an amenable number.

1101111221212 is a deficient number, since it is larger than the sum of its proper divisors (825833415916).

1101111221212 is a wasteful number, since it uses less digits than its factorization.

1101111221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275277805307 (or 275277805305 counting only the distinct ones).

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

Adding to 1101111221212 its reverse (2121221111011), we get a palindrome (3222332332223).

The spelling of 1101111221212 in words is "one trillion, one hundred one billion, one hundred eleven million, two hundred twenty-one thousand, two hundred twelve".