221323240402 has 8 divisors (see below), whose sum is σ = 362165302512. Its totient is φ = 100601472900.

The previous prime is 221323240399. The next prime is 221323240447. The reversal of 221323240402 is 204042323122.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5030073624 + ... + 5030073667.

It is an arithmetic number, because the mean of its divisors is an integer number (45270662814).

Almost surely, 2^221323240402 is an apocalyptic number.

221323240402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221323240402 is a deficient number, since it is larger than the sum of its proper divisors (140842062110).

221323240402 is a wasteful number, since it uses less digits than its factorization.

221323240402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10060147304.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 221323240402 its reverse (204042323122), we get a palindrome (425365563524).

The spelling of 221323240402 in words is "two hundred twenty-one billion, three hundred twenty-three million, two hundred forty thousand, four hundred two".