221652227172419 has 2 divisors, whose sum is σ = 221652227172420. Its totient is φ = 221652227172418.

The previous prime is 221652227172349. The next prime is 221652227172421. The reversal of 221652227172419 is 914271722256122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221652227172419 - 2¹⁶ = 221652227106883 is a prime.

It is a super-2 number, since 2×221652227172419² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 221652227172421, 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 (221652227172499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110826113586209 + 110826113586210.

It is an arithmetic number, because the mean of its divisors is an integer number (110826113586210).

Almost surely, 2^{221652227172419} is an apocalyptic number.

221652227172419 is a deficient number, since it is larger than the sum of its proper divisors (1).

221652227172419 is an equidigital number, since it uses as much as digits as its factorization.

221652227172419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3386880, while the sum is 53.

The spelling of 221652227172419 in words is "two hundred twenty-one trillion, six hundred fifty-two billion, two hundred twenty-seven million, one hundred seventy-two thousand, four hundred nineteen".