12003401061 has 6 divisors (see below), whose sum is σ = 17338245990. Its totient is φ = 8002267368.

The previous prime is 12003401029. The next prime is 12003401071. The reversal of 12003401061 is 16010430021.

It is a happy number.

12003401061 is a `hidden beast` number, since 1 + 200 + 3 + 401 + 0 + 61 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11748392100 + 255008961 = 108390^2 + 15969^2 .

It is not a de Polignac number, because 12003401061 - 2⁵ = 12003401029 is a prime.

It is a super-3 number, since 3×12003401061³ (a number of 31 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12003401071) 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, 666855606 + ... + 666855623.

It is an arithmetic number, because the mean of its divisors is an integer number (2889707665).

Almost surely, 2^12003401061 is an apocalyptic number.

It is an amenable number.

12003401061 is a deficient number, since it is larger than the sum of its proper divisors (5334844929).

12003401061 is a wasteful number, since it uses less digits than its factorization.

12003401061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333711235 (or 1333711232 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12003401061 its reverse (16010430021), we get a palindrome (28013831082).

The spelling of 12003401061 in words is "twelve billion, three million, four hundred one thousand, sixty-one".