222501245 has 4 divisors (see below), whose sum is σ = 267001500. Its totient is φ = 178000992.

The previous prime is 222501211. The next prime is 222501247. The reversal of 222501245 is 542105222.

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

It can be written as a sum of positive squares in 2 ways, for example, as 172685881 + 49815364 = 13141^2 + 7058^2 .

It is a cyclic number.

It is not a de Polignac number, because 222501245 - 2¹⁰ = 222500221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222501245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222501247) 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, 22250120 + ... + 22250129.

It is an arithmetic number, because the mean of its divisors is an integer number (66750375).

Almost surely, 2^222501245 is an apocalyptic number.

It is an amenable number.

222501245 is a deficient number, since it is larger than the sum of its proper divisors (44500255).

222501245 is an equidigital number, since it uses as much as digits as its factorization.

222501245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44500254.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 222501245 is about 14916.4756226127. The cubic root of 222501245 is about 605.9602672668.

Adding to 222501245 its reverse (542105222), we get a palindrome (764606467).

The spelling of 222501245 in words is "two hundred twenty-two million, five hundred one thousand, two hundred forty-five".