19112222 has 8 divisors (see below), whose sum is σ = 28875000. Its totient is φ = 9487224.

The previous prime is 19112209. The next prime is 19112227. The reversal of 19112222 is 22221191.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 19112194 and 19112203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19112227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34097 + ... + 34652.

It is an arithmetic number, because the mean of its divisors is an integer number (3609375).

Almost surely, 2^19112222 is an apocalyptic number.

19112222 is a deficient number, since it is larger than the sum of its proper divisors (9762778).

19112222 is a wasteful number, since it uses less digits than its factorization.

19112222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68890.

The product of its digits is 144, while the sum is 20.

The square root of 19112222 is about 4371.7527377472. The cubic root of 19112222 is about 267.3644907159.

The spelling of 19112222 in words is "nineteen million, one hundred twelve thousand, two hundred twenty-two".