21220201133071 has 2 divisors, whose sum is σ = 21220201133072. Its totient is φ = 21220201133070.

The previous prime is 21220201132993. The next prime is 21220201133077. The reversal of 21220201133071 is 17033110202212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21220201133071 - 2²³ = 21220192744463 is a prime.

It is a super-2 number, since 2×21220201133071² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21220201133077) 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, 10610100566535 + 10610100566536.

It is an arithmetic number, because the mean of its divisors is an integer number (10610100566536).

Almost surely, 2^{21220201133071} is an apocalyptic number.

21220201133071 is a deficient number, since it is larger than the sum of its proper divisors (1).

21220201133071 is an equidigital number, since it uses as much as digits as its factorization.

21220201133071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 25.

Adding to 21220201133071 its reverse (17033110202212), we get a palindrome (38253311335283).

The spelling of 21220201133071 in words is "twenty-one trillion, two hundred twenty billion, two hundred one million, one hundred thirty-three thousand, seventy-one".