10211220101171 has 2 divisors, whose sum is σ = 10211220101172. Its totient is φ = 10211220101170.

The previous prime is 10211220101153. The next prime is 10211220101207. The reversal of 10211220101171 is 17110102211201.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10211220101171 - 2⁶ = 10211220101107 is a prime.

It is not a weakly prime, because it can be changed into another prime (10211220104171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5105610050585 + 5105610050586.

It is an arithmetic number, because the mean of its divisors is an integer number (5105610050586).

Almost surely, 2^{10211220101171} is an apocalyptic number.

10211220101171 is a deficient number, since it is larger than the sum of its proper divisors (1).

10211220101171 is an equidigital number, since it uses as much as digits as its factorization.

10211220101171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 20.

Adding to 10211220101171 its reverse (17110102211201), we get a palindrome (27321322312372).

The spelling of 10211220101171 in words is "ten trillion, two hundred eleven billion, two hundred twenty million, one hundred one thousand, one hundred seventy-one".