221432113233 has 40 divisors (see below), whose sum is σ = 340808155688. Its totient is φ = 143172147456.

The previous prime is 221432113211. The next prime is 221432113249. The reversal of 221432113233 is 332311234122.

221432113233 is a `hidden beast` number, since 2 + 2 + 14 + 321 + 1 + 323 + 3 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 47252760129 + 174179353104 = 217377^2 + 417348^2 .

It is not a de Polignac number, because 221432113233 - 2¹⁸ = 221431851089 is a prime.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221432113197 and 221432113206.

It is not an unprimeable number, because it can be changed into a prime (221432113933) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 820035 + ... + 1056087.

Almost surely, 2^221432113233 is an apocalyptic number.

It is an amenable number.

221432113233 is a deficient number, since it is larger than the sum of its proper divisors (119376042455).

221432113233 is a wasteful number, since it uses less digits than its factorization.

221432113233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236415 (or 236406 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

Adding to 221432113233 its reverse (332311234122), we get a palindrome (553743347355).

The spelling of 221432113233 in words is "two hundred twenty-one billion, four hundred thirty-two million, one hundred thirteen thousand, two hundred thirty-three".