111212422 has 4 divisors (see below), whose sum is σ = 166818636. Its totient is φ = 55606210.

The previous prime is 111212393. The next prime is 111212441. The reversal of 111212422 is 224212111.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 111212396 and 111212405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27803104 + ... + 27803107.

It is an arithmetic number, because the mean of its divisors is an integer number (41704659).

Almost surely, 2^111212422 is an apocalyptic number.

111212422 is a deficient number, since it is larger than the sum of its proper divisors (55606214).

111212422 is an equidigital number, since it uses as much as digits as its factorization.

111212422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55606213.

The product of its digits is 64, while the sum is 16.

The square root of 111212422 is about 10545.7300363702. The cubic root of 111212422 is about 480.8959279683.

Adding to 111212422 its reverse (224212111), we get a palindrome (335424533).

The spelling of 111212422 in words is "one hundred eleven million, two hundred twelve thousand, four hundred twenty-two".