423221151 has 8 divisors (see below), whose sum is σ = 565868160. Its totient is φ = 281360792.

The previous prime is 423221107. The next prime is 423221153. The reversal of 423221151 is 151122324.

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 423221151 - 2¹⁵ = 423188383 is a prime.

It is a super-2 number, since 2×423221151² = 358232285307529602, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423221153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195405 + ... + 197558.

It is an arithmetic number, because the mean of its divisors is an integer number (70733520).

Almost surely, 2^423221151 is an apocalyptic number.

423221151 is a deficient number, since it is larger than the sum of its proper divisors (142647009).

423221151 is a wasteful number, since it uses less digits than its factorization.

423221151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393325.

The product of its digits is 480, while the sum is 21.

The square root of 423221151 is about 20572.3394634640. The cubic root of 423221151 is about 750.7968721376.

Adding to 423221151 its reverse (151122324), we get a palindrome (574343475).

The spelling of 423221151 in words is "four hundred twenty-three million, two hundred twenty-one thousand, one hundred fifty-one".