21040140313401 has 32 divisors (see below), whose sum is σ = 32690828112768. Its totient is φ = 11895298007040.

The previous prime is 21040140313391. The next prime is 21040140313403. The reversal of 21040140313401 is 10431304104012.

It is not a de Polignac number, because 21040140313401 - 2⁹ = 21040140312889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21040140313403) 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, 165886636 + ... + 166013421.

It is an arithmetic number, because the mean of its divisors is an integer number (1021588378524).

Almost surely, 2^{21040140313401} is an apocalyptic number.

It is an amenable number.

21040140313401 is a deficient number, since it is larger than the sum of its proper divisors (11650687799367).

21040140313401 is a wasteful number, since it uses less digits than its factorization.

21040140313401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331900201.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 21040140313401 its reverse (10431304104012), we get a palindrome (31471444417413).

The spelling of 21040140313401 in words is "twenty-one trillion, forty billion, one hundred forty million, three hundred thirteen thousand, four hundred one".