222020387 has 4 divisors (see below), whose sum is σ = 228020976. Its totient is φ = 216019800.

The previous prime is 222020353. The next prime is 222020389. The reversal of 222020387 is 783020222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 222020387 - 2⁸ = 222020131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222020389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3000239 + ... + 3000312.

It is an arithmetic number, because the mean of its divisors is an integer number (57005244).

Almost surely, 2^222020387 is an apocalyptic number.

222020387 is a deficient number, since it is larger than the sum of its proper divisors (6000589).

222020387 is an equidigital number, since it uses as much as digits as its factorization.

222020387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6000588.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 222020387 is about 14900.3485529702. The cubic root of 222020387 is about 605.5234292614.

The spelling of 222020387 in words is "two hundred twenty-two million, twenty thousand, three hundred eighty-seven".