1271011016 has 16 divisors (see below), whose sum is σ = 2599795440. Its totient is φ = 577732240.

The previous prime is 1271011009. The next prime is 1271011033. The reversal of 1271011016 is 6101101721.

It is a happy number.

It is a super-3 number, since 3×1271011016³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 7221566 + ... + 7221741.

It is an arithmetic number, because the mean of its divisors is an integer number (162487215).

Almost surely, 2^1271011016 is an apocalyptic number.

It is an amenable number.

1271011016 is an abundant number, since it is smaller than the sum of its proper divisors (1328784424).

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

1271011016 is a wasteful number, since it uses less digits than its factorization.

1271011016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14443324 (or 14443320 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 20.

The square root of 1271011016 is about 35651.2414370103. The cubic root of 1271011016 is about 1083.2194218899.

Adding to 1271011016 its reverse (6101101721), we get a palindrome (7372112737).

The spelling of 1271011016 in words is "one billion, two hundred seventy-one million, eleven thousand, sixteen".