12140001261 has 12 divisors (see below), whose sum is σ = 17618667040. Its totient is φ = 8054975880.

The previous prime is 12140001259. The next prime is 12140001299. The reversal of 12140001261 is 16210004121.

12140001261 is a `hidden beast` number, since 1 + 2 + 1 + 400 + 0 + 1 + 261 = 666.

It is not a de Polignac number, because 12140001261 - 2¹ = 12140001259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12140001161) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3194521 + ... + 3198318.

Almost surely, 2^12140001261 is an apocalyptic number.

It is an amenable number.

12140001261 is a deficient number, since it is larger than the sum of its proper divisors (5478665779).

12140001261 is a wasteful number, since it uses less digits than its factorization.

12140001261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6393056 (or 6393053 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 12140001261 its reverse (16210004121), we get a palindrome (28350005382).

The spelling of 12140001261 in words is "twelve billion, one hundred forty million, one thousand, two hundred sixty-one".