21303012022231 has 4 divisors (see below), whose sum is σ = 21990205958464. Its totient is φ = 20615818086000.

The previous prime is 21303012022219. The next prime is 21303012022241. The reversal of 21303012022231 is 13222021030312.

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

It is a cyclic number.

It is not a de Polignac number, because 21303012022231 - 2³⁹ = 20753256208343 is a prime.

It is a super-2 number, since 2×21303012022231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21303012022241) 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, 343596968070 + ... + 343596968131.

It is an arithmetic number, because the mean of its divisors is an integer number (5497551489616).

Almost surely, 2^{21303012022231} is an apocalyptic number.

21303012022231 is a deficient number, since it is larger than the sum of its proper divisors (687193936233).

21303012022231 is an equidigital number, since it uses as much as digits as its factorization.

21303012022231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687193936232.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21303012022231 its reverse (13222021030312), we get a palindrome (34525033052543).

The spelling of 21303012022231 in words is "twenty-one trillion, three hundred three billion, twelve million, twenty-two thousand, two hundred thirty-one".