221323014 has 24 divisors (see below), whose sum is σ = 523127592. Its totient is φ = 67067520.

The previous prime is 221323009. The next prime is 221323019. The reversal of 221323014 is 410323122.

It is an interprime number because it is at equal distance from previous prime (221323009) and next prime (221323019).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221323019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 558699 + ... + 559094.

It is an arithmetic number, because the mean of its divisors is an integer number (21796983).

Almost surely, 2^221323014 is an apocalyptic number.

221323014 is an abundant number, since it is smaller than the sum of its proper divisors (301804578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221323014 is a wasteful number, since it uses less digits than its factorization.

221323014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117812 (or 1117809 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 221323014 is about 14876.9289169506. The cubic root of 221323014 is about 604.8887749452. Note that the first 3 decimals are identical.

Adding to 221323014 its reverse (410323122), we get a palindrome (631646136).

The spelling of 221323014 in words is "two hundred twenty-one million, three hundred twenty-three thousand, fourteen".