21342124301 has 4 divisors (see below), whose sum is σ = 21345902652. Its totient is φ = 21338345952.

The previous prime is 21342124289. The next prime is 21342124337. The reversal of 21342124301 is 10342124312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1497767401 + 19844356900 = 38701^2 + 140870^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21342124301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21342124201) 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, 1880690 + ... + 1892003.

It is an arithmetic number, because the mean of its divisors is an integer number (5336475663).

Almost surely, 2^21342124301 is an apocalyptic number.

It is an amenable number.

21342124301 is a deficient number, since it is larger than the sum of its proper divisors (3778351).

21342124301 is an equidigital number, since it uses as much as digits as its factorization.

21342124301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3778350.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 21342124301 its reverse (10342124312), we get a palindrome (31684248613).

The spelling of 21342124301 in words is "twenty-one billion, three hundred forty-two million, one hundred twenty-four thousand, three hundred one".