220100101202171 has 2 divisors, whose sum is σ = 220100101202172. Its totient is φ = 220100101202170.

The previous prime is 220100101202129. The next prime is 220100101202209. The reversal of 220100101202171 is 171202101001022.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220100101202171 is a prime.

It is a super-2 number, since 2×220100101202171² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (220100101202671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110050050601085 + 110050050601086.

It is an arithmetic number, because the mean of its divisors is an integer number (110050050601086).

Almost surely, 2^{220100101202171} is an apocalyptic number.

220100101202171 is a deficient number, since it is larger than the sum of its proper divisors (1).

220100101202171 is an equidigital number, since it uses as much as digits as its factorization.

220100101202171 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 20.

Adding to 220100101202171 its reverse (171202101001022), we get a palindrome (391302202203193).

The spelling of 220100101202171 in words is "two hundred twenty trillion, one hundred billion, one hundred one million, two hundred two thousand, one hundred seventy-one".