1220210171 has 2 divisors, whose sum is σ = 1220210172. Its totient is φ = 1220210170.

The previous prime is 1220210137. The next prime is 1220210209. The reversal of 1220210171 is 1710120221.

It is a weak prime.

It is an emirp because it is prime and its reverse (1710120221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1220210171 - 2⁶ = 1220210107 is a prime.

It is a super-2 number, since 2×1220210171² = 2977825722823698482, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1220212171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610105085 + 610105086.

It is an arithmetic number, because the mean of its divisors is an integer number (610105086).

Almost surely, 2^1220210171 is an apocalyptic number.

1220210171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220210171 is an equidigital number, since it uses as much as digits as its factorization.

1220210171 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 17.

The square root of 1220210171 is about 34931.5068526967. The cubic root of 1220210171 is about 1068.5910856317.

Adding to 1220210171 its reverse (1710120221), we get a palindrome (2930330392).

The spelling of 1220210171 in words is "one billion, two hundred twenty million, two hundred ten thousand, one hundred seventy-one".