11011221101212 has 24 divisors (see below), whose sum is σ = 19593236952576. Its totient is φ = 5413920680448.

The previous prime is 11011221101203. The next prime is 11011221101227. The reversal of 11011221101212 is 21210112211011.

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 in 7 ways as a sum of consecutive naturals, for example, 95852473 + ... + 95967280.

It is an arithmetic number, because the mean of its divisors is an integer number (816384873024).

Almost surely, 2^{11011221101212} is an apocalyptic number.

It is an amenable number.

11011221101212 is a deficient number, since it is larger than the sum of its proper divisors (8582015851364).

11011221101212 is a wasteful number, since it uses less digits than its factorization.

11011221101212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191819997 (or 191819995 counting only the distinct ones).

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

Adding to 11011221101212 its reverse (21210112211011), we get a palindrome (32221333312223).

The spelling of 11011221101212 in words is "eleven trillion, eleven billion, two hundred twenty-one million, one hundred one thousand, two hundred twelve".