221303134233 has 16 divisors (see below), whose sum is σ = 327866832000. Its totient is φ = 147530771280.

The previous prime is 221303134207. The next prime is 221303134243. The reversal of 221303134233 is 332431303122.

221303134233 is a `hidden beast` number, since 221 + 3 + 0 + 3 + 13 + 423 + 3 = 666.

It is not a de Polignac number, because 221303134233 - 2¹⁶ = 221303068697 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 221303134197 and 221303134206.

It is not an unprimeable number, because it can be changed into a prime (221303134243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 888868 + ... + 1110266.

It is an arithmetic number, because the mean of its divisors is an integer number (20491677000).

Almost surely, 2^221303134233 is an apocalyptic number.

It is an amenable number.

221303134233 is a deficient number, since it is larger than the sum of its proper divisors (106563697767).

221303134233 is a wasteful number, since it uses less digits than its factorization.

221303134233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258429 (or 258423 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

Adding to 221303134233 its reverse (332431303122), we get a palindrome (553734437355).

The spelling of 221303134233 in words is "two hundred twenty-one billion, three hundred three million, one hundred thirty-four thousand, two hundred thirty-three".