222136501 has 8 divisors (see below), whose sum is σ = 236784600. Its totient is φ = 207664128.

The previous prime is 222136487. The next prime is 222136531. The reversal of 222136501 is 105631222.

It can be written as a sum of positive squares in 4 ways, for example, as 88849476 + 133287025 = 9426^2 + 11545^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 222136501 - 2⁷ = 222136373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222136531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41316 + ... + 46381.

It is an arithmetic number, because the mean of its divisors is an integer number (29598075).

Almost surely, 2^222136501 is an apocalyptic number.

It is an amenable number.

222136501 is a deficient number, since it is larger than the sum of its proper divisors (14648099).

222136501 is a wasteful number, since it uses less digits than its factorization.

222136501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87863.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 222136501 is about 14904.2443954734. The cubic root of 222136501 is about 605.6289713618.

Adding to 222136501 its reverse (105631222), we get a palindrome (327767723).

The spelling of 222136501 in words is "two hundred twenty-two million, one hundred thirty-six thousand, five hundred one".