11221121111012 has 12 divisors (see below), whose sum is σ = 19637832264960. Its totient is φ = 5610311892456.

The previous prime is 11221121110981. The next prime is 11221121111023. The reversal of 11221121111012 is 21011112112211.

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, 62064212 + ... + 62244747.

It is an arithmetic number, because the mean of its divisors is an integer number (1636486022080).

Almost surely, 2^{11221121111012} is an apocalyptic number.

It is an amenable number.

11221121111012 is a deficient number, since it is larger than the sum of its proper divisors (8416711153948).

11221121111012 is a wasteful number, since it uses less digits than its factorization.

11221121111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124331530 (or 124331528 counting only the distinct ones).

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

Adding to 11221121111012 its reverse (21011112112211), we get a palindrome (32232233223223).

The spelling of 11221121111012 in words is "eleven trillion, two hundred twenty-one billion, one hundred twenty-one million, one hundred eleven thousand, twelve".