21467434201 has 4 divisors (see below), whose sum is σ = 21469570000. Its totient is φ = 21465298404.

The previous prime is 21467434147. The next prime is 21467434213. The reversal of 21467434201 is 10243476412.

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 21467434201 - 2¹³ = 21467426009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21467434271) 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, 1052751 + ... + 1072948.

It is an arithmetic number, because the mean of its divisors is an integer number (5367392500).

Almost surely, 2^21467434201 is an apocalyptic number.

It is an amenable number.

21467434201 is a deficient number, since it is larger than the sum of its proper divisors (2135799).

21467434201 is a wasteful number, since it uses less digits than its factorization.

21467434201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2135798.

The product of its (nonzero) digits is 32256, while the sum is 34.

It can be divided in two parts, 2146 and 7434201, that added together give a palindrome (7436347).

The spelling of 21467434201 in words is "twenty-one billion, four hundred sixty-seven million, four hundred thirty-four thousand, two hundred one".