21123214301 has 8 divisors (see below), whose sum is σ = 24143120064. Its totient is φ = 18103884480.

The previous prime is 21123214249. The next prime is 21123214319. The reversal of 21123214301 is 10341232112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21123214301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21123214351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62300 + ... + 214773.

It is an arithmetic number, because the mean of its divisors is an integer number (3017890008).

Almost surely, 2^21123214301 is an apocalyptic number.

It is an amenable number.

21123214301 is a deficient number, since it is larger than the sum of its proper divisors (3019905763).

21123214301 is a wasteful number, since it uses less digits than its factorization.

21123214301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287971.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21123214301 its reverse (10341232112), we get a palindrome (31464446413).

The spelling of 21123214301 in words is "twenty-one billion, one hundred twenty-three million, two hundred fourteen thousand, three hundred one".