221440230302 has 8 divisors (see below), whose sum is σ = 334584873936. Its totient is φ = 109911938992.

The previous prime is 221440230269. The next prime is 221440230311. The reversal of 221440230302 is 203032044122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×221440230302² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 404087738 + ... + 404088285.

It is an arithmetic number, because the mean of its divisors is an integer number (41823109242).

Almost surely, 2^221440230302 is an apocalyptic number.

221440230302 is a deficient number, since it is larger than the sum of its proper divisors (113144643634).

221440230302 is a wasteful number, since it uses less digits than its factorization.

221440230302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808176162.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 221440230302 its reverse (203032044122), we get a palindrome (424472274424).

The spelling of 221440230302 in words is "two hundred twenty-one billion, four hundred forty million, two hundred thirty thousand, three hundred two".