21223102102231 has 4 divisors (see below), whose sum is σ = 21223402235200. Its totient is φ = 21222801969264.

The previous prime is 21223102102193. The next prime is 21223102102331. The reversal of 21223102102231 is 13220120132212.

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 21223102102231 - 2²³ = 21223093713623 is a prime.

It is a super-2 number, since 2×21223102102231² (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 (21223102102331) 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, 149960391 + ... + 150101848.

It is an arithmetic number, because the mean of its divisors is an integer number (5305850558800).

Almost surely, 2^{21223102102231} is an apocalyptic number.

21223102102231 is a deficient number, since it is larger than the sum of its proper divisors (300132969).

21223102102231 is an equidigital number, since it uses as much as digits as its factorization.

21223102102231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300132968.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21223102102231 its reverse (13220120132212), we get a palindrome (34443222234443).

The spelling of 21223102102231 in words is "twenty-one trillion, two hundred twenty-three billion, one hundred two million, one hundred two thousand, two hundred thirty-one".