221227623 has 12 divisors (see below), whose sum is σ = 322654800. Its totient is φ = 146052576.

The previous prime is 221227597. The next prime is 221227627. The reversal of 221227623 is 326722122.

221227623 is a `hidden beast` number, since 2 + 2 + 12 + 27 + 623 = 666.

It is not a de Polignac number, because 221227623 - 2¹⁴ = 221211239 is a prime.

It is a super-2 number, since 2×221227623² = 97883322356460258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221227627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 118398 + ... + 120251.

It is an arithmetic number, because the mean of its divisors is an integer number (26887900).

Almost surely, 2^221227623 is an apocalyptic number.

221227623 is a deficient number, since it is larger than the sum of its proper divisors (101427177).

221227623 is a wasteful number, since it uses less digits than its factorization.

221227623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238758 (or 238755 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 221227623 is about 14873.7225669971. The cubic root of 221227623 is about 604.8018593916.

Adding to 221227623 its reverse (326722122), we get a palindrome (547949745).

The spelling of 221227623 in words is "two hundred twenty-one million, two hundred twenty-seven thousand, six hundred twenty-three".