221404313023 has 8 divisors (see below), whose sum is σ = 234544358592. Its totient is φ = 208277185536.

The previous prime is 221404312991. The next prime is 221404313029. The reversal of 221404313023 is 320313404122.

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 221404313023 - 2⁵ = 221404312991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221404313029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3194215 + ... + 3262792.

It is an arithmetic number, because the mean of its divisors is an integer number (29318044824).

Almost surely, 2^221404313023 is an apocalyptic number.

221404313023 is a deficient number, since it is larger than the sum of its proper divisors (13140045569).

221404313023 is a wasteful number, since it uses less digits than its factorization.

221404313023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6459041.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 221404313023 its reverse (320313404122), we get a palindrome (541717717145).

The spelling of 221404313023 in words is "two hundred twenty-one billion, four hundred four million, three hundred thirteen thousand, twenty-three".