221144152211 has 2 divisors, whose sum is σ = 221144152212. Its totient is φ = 221144152210.

The previous prime is 221144152153. The next prime is 221144152213. The reversal of 221144152211 is 112251441122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221144152211 - 2³⁴ = 203964283027 is a prime.

Together with 221144152213, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (221144152213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110572076105 + 110572076106.

It is an arithmetic number, because the mean of its divisors is an integer number (110572076106).

Almost surely, 2^221144152211 is an apocalyptic number.

221144152211 is a deficient number, since it is larger than the sum of its proper divisors (1).

221144152211 is an equidigital number, since it uses as much as digits as its factorization.

221144152211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1280, while the sum is 26.

Adding to 221144152211 its reverse (112251441122), we get a palindrome (333395593333).

The spelling of 221144152211 in words is "two hundred twenty-one billion, one hundred forty-four million, one hundred fifty-two thousand, two hundred eleven".