1272216297 has 16 divisors (see below), whose sum is σ = 1851667200. Its totient is φ = 770552400.

The previous prime is 1272216259. The next prime is 1272216299. The reversal of 1272216297 is 7926122721.

It is not a de Polignac number, because 1272216297 - 2¹⁵ = 1272183529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1272216299) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44722 + ... + 67412.

It is an arithmetic number, because the mean of its divisors is an integer number (115729200).

Almost surely, 2^1272216297 is an apocalyptic number.

It is an amenable number.

1272216297 is a deficient number, since it is larger than the sum of its proper divisors (579450903).

1272216297 is a wasteful number, since it uses less digits than its factorization.

1272216297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24404.

The product of its digits is 42336, while the sum is 39.

The square root of 1272216297 is about 35668.1412047222. The cubic root of 1272216297 is about 1083.5617140496.

The spelling of 1272216297 in words is "one billion, two hundred seventy-two million, two hundred sixteen thousand, two hundred ninety-seven".