221412433211 has 4 divisors (see below), whose sum is σ = 221413382424. Its totient is φ = 221411484000.

The previous prime is 221412433201. The next prime is 221412433219. The reversal of 221412433211 is 112334214122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 221412433211 - 2¹⁰ = 221412432187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221412433219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144371 + ... + 680931.

It is an arithmetic number, because the mean of its divisors is an integer number (55353345606).

Almost surely, 2^221412433211 is an apocalyptic number.

221412433211 is a deficient number, since it is larger than the sum of its proper divisors (949213).

221412433211 is an equidigital number, since it uses as much as digits as its factorization.

221412433211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949212.

The product of its digits is 2304, while the sum is 26.

Adding to 221412433211 its reverse (112334214122), we get a palindrome (333746647333).

The spelling of 221412433211 in words is "two hundred twenty-one billion, four hundred twelve million, four hundred thirty-three thousand, two hundred eleven".