21143204301 has 4 divisors (see below), whose sum is σ = 28190939072. Its totient is φ = 14095469532.

The previous prime is 21143204267. The next prime is 21143204309. The reversal of 21143204301 is 10340234112.

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 not a de Polignac number, because 21143204301 - 2¹⁴ = 21143187917 is a prime.

It is a super-2 number, since 2×21143204301² (a number of 21 digits) contains 22 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 (21143204309) 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, 3523867381 + ... + 3523867386.

It is an arithmetic number, because the mean of its divisors is an integer number (7047734768).

Almost surely, 2^21143204301 is an apocalyptic number.

It is an amenable number.

21143204301 is a deficient number, since it is larger than the sum of its proper divisors (7047734771).

21143204301 is an equidigital number, since it uses as much as digits as its factorization.

21143204301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7047734770.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21143204301 its reverse (10340234112), we get a palindrome (31483438413).

The spelling of 21143204301 in words is "twenty-one billion, one hundred forty-three million, two hundred four thousand, three hundred one".