221323210151 has 2 divisors, whose sum is σ = 221323210152. Its totient is φ = 221323210150.

The previous prime is 221323210139. The next prime is 221323210153. The reversal of 221323210151 is 151012323122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221323210151 - 2²² = 221319015847 is a prime.

Together with 221323210153, 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 (221323210153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110661605075 + 110661605076.

It is an arithmetic number, because the mean of its divisors is an integer number (110661605076).

Almost surely, 2^221323210151 is an apocalyptic number.

221323210151 is a deficient number, since it is larger than the sum of its proper divisors (1).

221323210151 is an equidigital number, since it uses as much as digits as its factorization.

221323210151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 221323210151 its reverse (151012323122), we get a palindrome (372335533273).

The spelling of 221323210151 in words is "two hundred twenty-one billion, three hundred twenty-three million, two hundred ten thousand, one hundred fifty-one".