111420422 has 4 divisors (see below), whose sum is σ = 167130636. Its totient is φ = 55710210.

The previous prime is 111420401. The next prime is 111420437. The reversal of 111420422 is 224024111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 224024111 = 2243 ⋅99877.

It is a self number, because there is not a number n which added to its sum of digits gives 111420422.

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, 27855104 + ... + 27855107.

It is an arithmetic number, because the mean of its divisors is an integer number (41782659).

Almost surely, 2^111420422 is an apocalyptic number.

111420422 is a deficient number, since it is larger than the sum of its proper divisors (55710214).

111420422 is an equidigital number, since it uses as much as digits as its factorization.

111420422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55710213.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 111420422 is about 10555.5872408881. The cubic root of 111420422 is about 481.1955469507.

Adding to 111420422 its reverse (224024111), we get a palindrome (335444533).

The spelling of 111420422 in words is "one hundred eleven million, four hundred twenty thousand, four hundred twenty-two".