21321231202301 has 16 divisors (see below), whose sum is σ = 22848852556800. Its totient is φ = 19834906618800.

The previous prime is 21321231202289. The next prime is 21321231202303. The reversal of 21321231202301 is 10320213212312.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21321231202301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21321231202303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9417755 + ... + 11460216.

It is an arithmetic number, because the mean of its divisors is an integer number (1428053284800).

Almost surely, 2^{21321231202301} is an apocalyptic number.

It is an amenable number.

21321231202301 is a deficient number, since it is larger than the sum of its proper divisors (1527621354499).

21321231202301 is a wasteful number, since it uses less digits than its factorization.

21321231202301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20878960.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21321231202301 its reverse (10320213212312), we get a palindrome (31641444414613).

The spelling of 21321231202301 in words is "twenty-one trillion, three hundred twenty-one billion, two hundred thirty-one million, two hundred two thousand, three hundred one".