1273172201 has 24 divisors (see below), whose sum is σ = 1532302272. Its totient is φ = 1035871200.

The previous prime is 1273172179. The next prime is 1273172203. The reversal of 1273172201 is 1022713721.

It is a de Polignac number, because none of the positive numbers 2^k-1273172201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1273172203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 354746 + ... + 358316.

It is an arithmetic number, because the mean of its divisors is an integer number (63845928).

Almost surely, 2^1273172201 is an apocalyptic number.

It is an amenable number.

1273172201 is a deficient number, since it is larger than the sum of its proper divisors (259130071).

1273172201 is an equidigital number, since it uses as much as digits as its factorization.

1273172201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3693 (or 3662 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 1273172201 is about 35681.5386579671. The cubic root of 1273172201 is about 1083.8330310338.

Adding to 1273172201 its reverse (1022713721), we get a palindrome (2295885922).

The spelling of 1273172201 in words is "one billion, two hundred seventy-three million, one hundred seventy-two thousand, two hundred one".