1220125171 has 2 divisors, whose sum is σ = 1220125172. Its totient is φ = 1220125170.

The previous prime is 1220125103. The next prime is 1220125199. The reversal of 1220125171 is 1715210221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1220125171 - 2¹⁷ = 1219994099 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220125471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610062585 + 610062586.

It is an arithmetic number, because the mean of its divisors is an integer number (610062586).

Almost surely, 2^1220125171 is an apocalyptic number.

1220125171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220125171 is an equidigital number, since it uses as much as digits as its factorization.

1220125171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 280, while the sum is 22.

The square root of 1220125171 is about 34930.2901648412. The cubic root of 1220125171 is about 1068.5662723240.

Adding to 1220125171 its reverse (1715210221), we get a palindrome (2935335392).

The spelling of 1220125171 in words is "one billion, two hundred twenty million, one hundred twenty-five thousand, one hundred seventy-one".