42213222 has 12 divisors (see below), whose sum is σ = 91462020. Its totient is φ = 14071068.

The previous prime is 42213203. The next prime is 42213233. The reversal of 42213222 is 22231224.

It is a super-2 number, since 2×42213222² = 3563912223242568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 2345179 = 42213222 / (4 + 2 + 2 + 1 + 3 + 2 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 42213195 and 42213204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1172572 + ... + 1172607.

It is an arithmetic number, because the mean of its divisors is an integer number (7621835).

Almost surely, 2^42213222 is an apocalyptic number.

42213222 is an abundant number, since it is smaller than the sum of its proper divisors (49248798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42213222 is a wasteful number, since it uses less digits than its factorization.

42213222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2345187 (or 2345184 counting only the distinct ones).

The product of its digits is 384, while the sum is 18.

The square root of 42213222 is about 6497.1703071414. The cubic root of 42213222 is about 348.1898983383.

Adding to 42213222 its reverse (22231224), we get a palindrome (64444446).

The spelling of 42213222 in words is "forty-two million, two hundred thirteen thousand, two hundred twenty-two".