222191667 has 12 divisors (see below), whose sum is σ = 332830680. Its totient is φ = 148127616.

The previous prime is 222191653. The next prime is 222191689. The reversal of 222191667 is 766191222.

222191667 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 222191667 - 2¹⁰ = 222190643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222191867) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 456942 + ... + 457427.

It is an arithmetic number, because the mean of its divisors is an integer number (27735890).

Almost surely, 2^222191667 is an apocalyptic number.

222191667 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

222191667 is a deficient number, since it is larger than the sum of its proper divisors (110639013).

222191667 is an frugal number, since it uses more digits than its factorization.

222191667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914384 (or 914372 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 222191667 is about 14906.0949614579. The cubic root of 222191667 is about 605.6791017431.

The spelling of 222191667 in words is "two hundred twenty-two million, one hundred ninety-one thousand, six hundred sixty-seven".