21341254201 has 4 divisors (see below), whose sum is σ = 21390770304. Its totient is φ = 21291738100.

The previous prime is 21341254199. The next prime is 21341254211. The reversal of 21341254201 is 10245214312.

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 21341254201 - 2¹ = 21341254199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21341254211) 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, 24757405 + ... + 24758266.

It is an arithmetic number, because the mean of its divisors is an integer number (5347692576).

Almost surely, 2^21341254201 is an apocalyptic number.

It is an amenable number.

21341254201 is a deficient number, since it is larger than the sum of its proper divisors (49516103).

21341254201 is an equidigital number, since it uses as much as digits as its factorization.

21341254201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49516102.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 21341254201 its reverse (10245214312), we get a palindrome (31586468513).

The spelling of 21341254201 in words is "twenty-one billion, three hundred forty-one million, two hundred fifty-four thousand, two hundred one".