21140413201 has 4 divisors (see below), whose sum is σ = 21142508400. Its totient is φ = 21138318004.

The previous prime is 21140413199. The next prime is 21140413241. The reversal of 21140413201 is 10231404112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21140413201 - 2¹ = 21140413199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21140413241) 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, 1032391 + ... + 1052668.

It is an arithmetic number, because the mean of its divisors is an integer number (5285627100).

Almost surely, 2^21140413201 is an apocalyptic number.

It is an amenable number.

21140413201 is a deficient number, since it is larger than the sum of its proper divisors (2095199).

21140413201 is a wasteful number, since it uses less digits than its factorization.

21140413201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2095198.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 21140413201 its reverse (10231404112), we get a palindrome (31371817313).

The spelling of 21140413201 in words is "twenty-one billion, one hundred forty million, four hundred thirteen thousand, two hundred one".