111121022212 has 6 divisors (see below), whose sum is σ = 194461788878. Its totient is φ = 55560511104.

The previous prime is 111121022167. The next prime is 111121022261. The reversal of 111121022212 is 212220121111.

It can be written as a sum of positive squares in only one way, i.e., 87128870976 + 23992151236 = 295176^2 + 154894^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13890127773 + ... + 13890127780.

Almost surely, 2^111121022212 is an apocalyptic number.

It is an amenable number.

111121022212 is a deficient number, since it is larger than the sum of its proper divisors (83340766666).

111121022212 is a wasteful number, since it uses less digits than its factorization.

111121022212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27780255557 (or 27780255555 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 111121022212 its reverse (212220121111), we get a palindrome (323341143323).

The spelling of 111121022212 in words is "one hundred eleven billion, one hundred twenty-one million, twenty-two thousand, two hundred twelve".