1212200171 has 48 divisors (see below), whose sum is σ = 1633282560. Its totient is φ = 888874560.

The previous prime is 1212200167. The next prime is 1212200189. The reversal of 1212200171 is 1710022121.

It is not a de Polignac number, because 1212200171 - 2² = 1212200167 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212220171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 567776 + ... + 569906.

It is an arithmetic number, because the mean of its divisors is an integer number (34026720).

Almost surely, 2^1212200171 is an apocalyptic number.

1212200171 is a deficient number, since it is larger than the sum of its proper divisors (421082389).

1212200171 is a wasteful number, since it uses less digits than its factorization.

1212200171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2224 (or 2217 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 17.

The square root of 1212200171 is about 34816.6651332376. The cubic root of 1212200171 is about 1066.2477154302.

Adding to 1212200171 its reverse (1710022121), we get a palindrome (2922222292).

The spelling of 1212200171 in words is "one billion, two hundred twelve million, two hundred thousand, one hundred seventy-one".