74212222 has 16 divisors (see below), whose sum is σ = 127677312. Its totient is φ = 31691160.

The previous prime is 74212219. The next prime is 74212223. The reversal of 74212222 is 22221247.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 74212193 and 74212202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74212223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5404 + ... + 13327.

It is an arithmetic number, because the mean of its divisors is an integer number (7979832).

Almost surely, 2^74212222 is an apocalyptic number.

74212222 is a deficient number, since it is larger than the sum of its proper divisors (53465090).

74212222 is a wasteful number, since it uses less digits than its factorization.

74212222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19023.

The product of its digits is 896, while the sum is 22.

The square root of 74212222 is about 8614.6515890081. The cubic root of 74212222 is about 420.2346043796.

Adding to 74212222 its reverse (22221247), we get a palindrome (96433469).

The spelling of 74212222 in words is "seventy-four million, two hundred twelve thousand, two hundred twenty-two".