12440201401 has 4 divisors (see below), whose sum is σ = 13171977972. Its totient is φ = 11708424832.

The previous prime is 12440201381. The next prime is 12440201441. The reversal of 12440201401 is 10410204421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10410204421 = 89 ⋅116968589.

It can be written as a sum of positive squares in 2 ways, for example, as 9423555625 + 3016645776 = 97075^2 + 54924^2 .

It is a cyclic number.

It is not a de Polignac number, because 12440201401 - 2¹¹ = 12440199353 is a prime.

It is a super-2 number, since 2×12440201401² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12440201441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 365888260 + ... + 365888293.

It is an arithmetic number, because the mean of its divisors is an integer number (3292994493).

Almost surely, 2^12440201401 is an apocalyptic number.

It is an amenable number.

12440201401 is a deficient number, since it is larger than the sum of its proper divisors (731776571).

12440201401 is an equidigital number, since it uses as much as digits as its factorization.

12440201401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731776570.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 12440201401 its reverse (10410204421), we get a palindrome (22850405822).

It can be divided in two parts, 1244020 and 1401, that added together give a palindrome (1245421).

The spelling of 12440201401 in words is "twelve billion, four hundred forty million, two hundred one thousand, four hundred one".