1272269011 has 6 divisors (see below), whose sum is σ = 1377664260. Its totient is φ = 1174402008.

The previous prime is 1272268999. The next prime is 1272269029. The reversal of 1272269011 is 1109622721.

It is not a de Polignac number, because 1272269011 - 2⁷ = 1272268883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1272269041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3763941 + ... + 3764278.

It is an arithmetic number, because the mean of its divisors is an integer number (229610710).

Almost surely, 2^1272269011 is an apocalyptic number.

1272269011 is a deficient number, since it is larger than the sum of its proper divisors (105395249).

1272269011 is an equidigital number, since it uses as much as digits as its factorization.

1272269011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7528245 (or 7528232 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 1272269011 is about 35668.8801478263. The cubic root of 1272269011 is about 1083.5766795559.

The spelling of 1272269011 in words is "one billion, two hundred seventy-two million, two hundred sixty-nine thousand, eleven".