111121222021112 has 64 divisors (see below), whose sum is σ = 214242881126400. Its totient is φ = 54000097632000.

The previous prime is 111121222021079. The next prime is 111121222021123. The reversal of 111121222021112 is 211120222121111.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 984022589 + ... + 984135507.

It is an arithmetic number, because the mean of its divisors is an integer number (3347545017600).

Almost surely, 2^{111121222021112} is an apocalyptic number.

It is an amenable number.

111121222021112 is a deficient number, since it is larger than the sum of its proper divisors (103121659105288).

111121222021112 is a wasteful number, since it uses less digits than its factorization.

111121222021112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124308 (or 124304 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 111121222021112 its reverse (211120222121111), we get a palindrome (322241444142223).

Subtracting 111121222021112 from its reverse (211120222121111), we obtain a palindrome (99999000099999).

The spelling of 111121222021112 in words is "one hundred eleven trillion, one hundred twenty-one billion, two hundred twenty-two million, twenty-one thousand, one hundred twelve".