21342001001 has 16 divisors (see below), whose sum is σ = 23075625600. Its totient is φ = 19677829248.

The previous prime is 21342000961. The next prime is 21342001007. The reversal of 21342001001 is 10010024312.

It is a cyclic number.

It is not a de Polignac number, because 21342001001 - 2⁶ = 21342000937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21342001007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 385610 + ... + 437468.

It is an arithmetic number, because the mean of its divisors is an integer number (1442226600).

Almost surely, 2^21342001001 is an apocalyptic number.

It is an amenable number.

21342001001 is a deficient number, since it is larger than the sum of its proper divisors (1733624599).

21342001001 is a wasteful number, since it uses less digits than its factorization.

21342001001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52528.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21342001001 its reverse (10010024312), we get a palindrome (31352025313).

The spelling of 21342001001 in words is "twenty-one billion, three hundred forty-two million, one thousand, one".