21040320141 has 12 divisors (see below), whose sum is σ = 30889796860. Its totient is φ = 13796930880.

The previous prime is 21040320109. The next prime is 21040320163. The reversal of 21040320141 is 14102304012.

21040320141 is a `hidden beast` number, since 21 + 0 + 403 + 201 + 41 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2444906916 + 18595413225 = 49446^2 + 136365^2 .

It is not a de Polignac number, because 21040320141 - 2⁵ = 21040320109 is a prime.

It is a super-3 number, since 3×21040320141³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21040330141) 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, 19161856 + ... + 19162953.

Almost surely, 2^21040320141 is an apocalyptic number.

It is an amenable number.

21040320141 is a deficient number, since it is larger than the sum of its proper divisors (9849476719).

21040320141 is a wasteful number, since it uses less digits than its factorization.

21040320141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38324876 (or 38324873 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 21040320141 its reverse (14102304012), we get a palindrome (35142624153).

The spelling of 21040320141 in words is "twenty-one billion, forty million, three hundred twenty thousand, one hundred forty-one".