222215145 has 16 divisors (see below), whose sum is σ = 355811712. Its totient is φ = 118425600.

The previous prime is 222215113. The next prime is 222215159. The reversal of 222215145 is 541512222.

It is not a de Polignac number, because 222215145 - 2⁵ = 222215113 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18345 + ... + 27945.

It is an arithmetic number, because the mean of its divisors is an integer number (22238232).

Almost surely, 2^222215145 is an apocalyptic number.

It is an amenable number.

222215145 is a deficient number, since it is larger than the sum of its proper divisors (133596567).

222215145 is a wasteful number, since it uses less digits than its factorization.

222215145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11152.

The product of its digits is 1600, while the sum is 24.

The square root of 222215145 is about 14906.8824708589. The cubic root of 222215145 is about 605.7004341260.

Adding to 222215145 its reverse (541512222), we get a palindrome (763727367).

The spelling of 222215145 in words is "two hundred twenty-two million, two hundred fifteen thousand, one hundred forty-five".