221423221433 has 8 divisors (see below), whose sum is σ = 221687007360. Its totient is φ = 221159529360.

The previous prime is 221423221427. The next prime is 221423221441. The reversal of 221423221433 is 334122324122.

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 221423221433 - 2⁴ = 221423221417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221423221396 and 221423221405.

It is not an unprimeable number, because it can be changed into a prime (221423221633) 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, 5439008 + ... + 5479566.

It is an arithmetic number, because the mean of its divisors is an integer number (27710875920).

Almost surely, 2^221423221433 is an apocalyptic number.

It is an amenable number.

221423221433 is a deficient number, since it is larger than the sum of its proper divisors (263785927).

221423221433 is a wasteful number, since it uses less digits than its factorization.

221423221433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46927.

The product of its digits is 13824, while the sum is 29.

Adding to 221423221433 its reverse (334122324122), we get a palindrome (555545545555).

The spelling of 221423221433 in words is "two hundred twenty-one billion, four hundred twenty-three million, two hundred twenty-one thousand, four hundred thirty-three".