222016815 has 32 divisors (see below), whose sum is σ = 411863040. Its totient is φ = 113259168.

The previous prime is 222016811. The next prime is 222016829. The reversal of 222016815 is 518610222.

It is a happy number.

It is not a de Polignac number, because 222016815 - 2² = 222016811 is a prime.

It is a super-2 number, since 2×222016815² = 98582932285488450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222016811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32647 + ... + 38856.

It is an arithmetic number, because the mean of its divisors is an integer number (12870720).

Almost surely, 2^222016815 is an apocalyptic number.

222016815 is a deficient number, since it is larger than the sum of its proper divisors (189846225).

222016815 is a wasteful number, since it uses less digits than its factorization.

222016815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71540 (or 71534 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 222016815 is about 14900.2286895202. The cubic root of 222016815 is about 605.5201819000.

The spelling of 222016815 in words is "two hundred twenty-two million, sixteen thousand, eight hundred fifteen".