21343214001 has 4 divisors (see below), whose sum is σ = 28457618672. Its totient is φ = 14228809332.

The previous prime is 21343213999. The next prime is 21343214029. The reversal of 21343214001 is 10041234312.

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 21343214001 - 2¹ = 21343213999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21343214801) 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, 3557202331 + ... + 3557202336.

It is an arithmetic number, because the mean of its divisors is an integer number (7114404668).

Almost surely, 2^21343214001 is an apocalyptic number.

It is an amenable number.

21343214001 is a deficient number, since it is larger than the sum of its proper divisors (7114404671).

21343214001 is an equidigital number, since it uses as much as digits as its factorization.

21343214001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7114404670.

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

Adding to 21343214001 its reverse (10041234312), we get a palindrome (31384448313).

The spelling of 21343214001 in words is "twenty-one billion, three hundred forty-three million, two hundred fourteen thousand, one".