222145214 has 4 divisors (see below), whose sum is σ = 333217824. Its totient is φ = 111072606.

The previous prime is 222145211. The next prime is 222145219. The reversal of 222145214 is 412541222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 412541222 = 2 ⋅206270611.

It is a super-2 number, since 2×222145214² = 98696992206211592, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 222145214.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222145211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55536302 + ... + 55536305.

It is an arithmetic number, because the mean of its divisors is an integer number (83304456).

Almost surely, 2^222145214 is an apocalyptic number.

222145214 is a deficient number, since it is larger than the sum of its proper divisors (111072610).

222145214 is a wasteful number, since it uses less digits than its factorization.

222145214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111072609.

The product of its digits is 1280, while the sum is 23.

The square root of 222145214 is about 14904.5366918935. The cubic root of 222145214 is about 605.6368895806.

Adding to 222145214 its reverse (412541222), we get a palindrome (634686436).

The spelling of 222145214 in words is "two hundred twenty-two million, one hundred forty-five thousand, two hundred fourteen".