221101020271 has 2 divisors, whose sum is σ = 221101020272. Its totient is φ = 221101020270.

The previous prime is 221101020199. The next prime is 221101020293. The reversal of 221101020271 is 172020101122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221101020271 - 2²³ = 221092631663 is a prime.

It is a super-2 number, since 2×221101020271² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221101020571) 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, 110550510135 + 110550510136.

It is an arithmetic number, because the mean of its divisors is an integer number (110550510136).

Almost surely, 2^221101020271 is an apocalyptic number.

221101020271 is a deficient number, since it is larger than the sum of its proper divisors (1).

221101020271 is an equidigital number, since it uses as much as digits as its factorization.

221101020271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 19.

Adding to 221101020271 its reverse (172020101122), we get a palindrome (393121121393).

The spelling of 221101020271 in words is "two hundred twenty-one billion, one hundred one million, twenty thousand, two hundred seventy-one".