222021115 has 8 divisors (see below), whose sum is σ = 267182208. Its totient is φ = 177112320.

The previous prime is 222021113. The next prime is 222021131. The reversal of 222021115 is 511120222.

It is a happy number.

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

It is not a de Polignac number, because 222021115 - 2¹ = 222021113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222021113) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 61131 + ... + 64660.

It is an arithmetic number, because the mean of its divisors is an integer number (33397776).

Almost surely, 2^222021115 is an apocalyptic number.

222021115 is a deficient number, since it is larger than the sum of its proper divisors (45161093).

222021115 is a wasteful number, since it uses less digits than its factorization.

222021115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126149.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 222021115 is about 14900.3729819089. The cubic root of 222021115 is about 605.5240910933.

Adding to 222021115 its reverse (511120222), we get a palindrome (733141337).

The spelling of 222021115 in words is "two hundred twenty-two million, twenty-one thousand, one hundred fifteen".