221132000231 has 2 divisors, whose sum is σ = 221132000232. Its totient is φ = 221132000230.

The previous prime is 221132000227. The next prime is 221132000233. The reversal of 221132000231 is 132000231122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221132000231 - 2² = 221132000227 is a prime.

It is a super-2 number, since 2×221132000231² (a number of 23 digits) contains 22 as substring.

Together with 221132000233, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221132000233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110566000115 + 110566000116.

It is an arithmetic number, because the mean of its divisors is an integer number (110566000116).

Almost surely, 2^221132000231 is an apocalyptic number.

221132000231 is a deficient number, since it is larger than the sum of its proper divisors (1).

221132000231 is an equidigital number, since it uses as much as digits as its factorization.

221132000231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 221132000231 its reverse (132000231122), we get a palindrome (353132231353).

The spelling of 221132000231 in words is "two hundred twenty-one billion, one hundred thirty-two million, two hundred thirty-one", and thus it is an aban number.