13081212771 has 32 divisors (see below), whose sum is σ = 19384116480. Its totient is φ = 7779907200.

The previous prime is 13081212721. The next prime is 13081212797. The reversal of 13081212771 is 17721218031.

It is not a de Polignac number, because 13081212771 - 2²¹ = 13079115619 is a prime.

It is a super-2 number, since 2×13081212771² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (13081212721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 884425 + ... + 899093.

It is an arithmetic number, because the mean of its divisors is an integer number (605753640).

Almost surely, 2^13081212771 is an apocalyptic number.

13081212771 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13081212771 is a deficient number, since it is larger than the sum of its proper divisors (6302903709).

13081212771 is a wasteful number, since it uses less digits than its factorization.

13081212771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15187.

The product of its (nonzero) digits is 4704, while the sum is 33.

The spelling of 13081212771 in words is "thirteen billion, eighty-one million, two hundred twelve thousand, seven hundred seventy-one".