221412221123231 has 4 divisors (see below), whose sum is σ = 221435833398912. Its totient is φ = 221388608847552.

The previous prime is 221412221123189. The next prime is 221412221123279. The reversal of 221412221123231 is 132321122214122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221412221123231 - 2³⁸ = 221137343216287 is a prime.

It is a super-2 number, since 2×221412221123231² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221412221123194 and 221412221123203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221412221120231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11806123775 + ... + 11806142528.

It is an arithmetic number, because the mean of its divisors is an integer number (55358958349728).

Almost surely, 2^{221412221123231} is an apocalyptic number.

221412221123231 is a deficient number, since it is larger than the sum of its proper divisors (23612275681).

221412221123231 is an equidigital number, since it uses as much as digits as its factorization.

221412221123231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23612275680.

The product of its digits is 4608, while the sum is 29.

Adding to 221412221123231 its reverse (132321122214122), we get a palindrome (353733343337353).

The spelling of 221412221123231 in words is "two hundred twenty-one trillion, four hundred twelve billion, two hundred twenty-one million, one hundred twenty-three thousand, two hundred thirty-one".