220121012101171 has 2 divisors, whose sum is σ = 220121012101172. Its totient is φ = 220121012101170.

The previous prime is 220121012101147. The next prime is 220121012101187. The reversal of 220121012101171 is 171101210121022.

220121012101171 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220121012101171 - 2⁷ = 220121012101043 is a prime.

It is not a weakly prime, because it can be changed into another prime (220121012101271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110060506050585 + 110060506050586.

It is an arithmetic number, because the mean of its divisors is an integer number (110060506050586).

Almost surely, 2^{220121012101171} is an apocalyptic number.

220121012101171 is a deficient number, since it is larger than the sum of its proper divisors (1).

220121012101171 is an equidigital number, since it uses as much as digits as its factorization.

220121012101171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 22.

Adding to 220121012101171 its reverse (171101210121022), we get a palindrome (391222222222193).

The spelling of 220121012101171 in words is "two hundred twenty trillion, one hundred twenty-one billion, twelve million, one hundred one thousand, one hundred seventy-one".