21413230201 has 4 divisors (see below), whose sum is σ = 23359887504. Its totient is φ = 19466572900.

The previous prime is 21413230193. The next prime is 21413230249. The reversal of 21413230201 is 10203231412.

It is a happy number.

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 21413230201 - 2³ = 21413230193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21413230271) 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, 973328635 + ... + 973328656.

It is an arithmetic number, because the mean of its divisors is an integer number (5839971876).

Almost surely, 2^21413230201 is an apocalyptic number.

It is an amenable number.

21413230201 is a deficient number, since it is larger than the sum of its proper divisors (1946657303).

21413230201 is a wasteful number, since it uses less digits than its factorization.

21413230201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1946657302.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21413230201 its reverse (10203231412), we get a palindrome (31616461613).

The spelling of 21413230201 in words is "twenty-one billion, four hundred thirteen million, two hundred thirty thousand, two hundred one".