222201641 has 4 divisors (see below), whose sum is σ = 225014400. Its totient is φ = 219388884.

The previous prime is 222201631. The next prime is 222201649. The reversal of 222201641 is 146102222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222201641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222201649) 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, 1406261 + ... + 1406418.

It is an arithmetic number, because the mean of its divisors is an integer number (56253600).

Almost surely, 2^222201641 is an apocalyptic number.

It is an amenable number.

222201641 is a deficient number, since it is larger than the sum of its proper divisors (2812759).

222201641 is an equidigital number, since it uses as much as digits as its factorization.

222201641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2812758.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 222201641 is about 14906.4295188352. The cubic root of 222201641 is about 605.6881644187.

Adding to 222201641 its reverse (146102222), we get a palindrome (368303863).

The spelling of 222201641 in words is "two hundred twenty-two million, two hundred one thousand, six hundred forty-one".