202023105421171 has 2 divisors, whose sum is σ = 202023105421172. Its totient is φ = 202023105421170.

The previous prime is 202023105421103. The next prime is 202023105421177. The reversal of 202023105421171 is 171124501320202.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202023105421171 is a prime.

It is a super-2 number, since 2×202023105421171² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (202023105421177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101011552710585 + 101011552710586.

It is an arithmetic number, because the mean of its divisors is an integer number (101011552710586).

Almost surely, 2^{202023105421171} is an apocalyptic number.

202023105421171 is a deficient number, since it is larger than the sum of its proper divisors (1).

202023105421171 is an equidigital number, since it uses as much as digits as its factorization.

202023105421171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 31.

Adding to 202023105421171 its reverse (171124501320202), we get a palindrome (373147606741373).

The spelling of 202023105421171 in words is "two hundred two trillion, twenty-three billion, one hundred five million, four hundred twenty-one thousand, one hundred seventy-one".