1271066216 has 32 divisors (see below), whose sum is σ = 2811578880. Its totient is φ = 527169600.

The previous prime is 1271066189. The next prime is 1271066219. The reversal of 1271066216 is 6126601721.

It is not an unprimeable number, because it can be changed into a prime (1271066219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 364355 + ... + 367826.

It is an arithmetic number, because the mean of its divisors is an integer number (87861840).

Almost surely, 2^1271066216 is an apocalyptic number.

It is an amenable number.

1271066216 is an abundant number, since it is smaller than the sum of its proper divisors (1540512664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1271066216 is a wasteful number, since it uses less digits than its factorization.

1271066216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732225 (or 732221 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 1271066216 is about 35652.0155951946. The cubic root of 1271066216 is about 1083.2351030670.

Adding to 1271066216 its reverse (6126601721), we get a palindrome (7397667937).

The spelling of 1271066216 in words is "one billion, two hundred seventy-one million, sixty-six thousand, two hundred sixteen".