11121221111012 has 12 divisors (see below), whose sum is σ = 19792003672560. Its totient is φ = 5466362918856.

The previous prime is 11121221110981. The next prime is 11121221111051. The reversal of 11121221111012 is 21011112212111.

11121221111012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 23561908898 + ... + 23561909369.

It is an arithmetic number, because the mean of its divisors is an integer number (1649333639380).

Almost surely, 2^{11121221111012} is an apocalyptic number.

It is an amenable number.

11121221111012 is a deficient number, since it is larger than the sum of its proper divisors (8670782561548).

11121221111012 is a wasteful number, since it uses less digits than its factorization.

11121221111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47123818330 (or 47123818328 counting only the distinct ones).

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

Adding to 11121221111012 its reverse (21011112212111), we get a palindrome (32132333323123).

The spelling of 11121221111012 in words is "eleven trillion, one hundred twenty-one billion, two hundred twenty-one million, one hundred eleven thousand, twelve".