21222323101 has 4 divisors (see below), whose sum is σ = 24254083552. Its totient is φ = 18190562652.

The previous prime is 21222323081. The next prime is 21222323119. The reversal of 21222323101 is 10132322212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21222323101 - 2¹³ = 21222314909 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 (21222323191) 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, 1515880215 + ... + 1515880228.

It is an arithmetic number, because the mean of its divisors is an integer number (6063520888).

Almost surely, 2^21222323101 is an apocalyptic number.

It is an amenable number.

21222323101 is a deficient number, since it is larger than the sum of its proper divisors (3031760451).

21222323101 is an equidigital number, since it uses as much as digits as its factorization.

21222323101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3031760450.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21222323101 its reverse (10132322212), we get a palindrome (31354645313).

The spelling of 21222323101 in words is "twenty-one billion, two hundred twenty-two million, three hundred twenty-three thousand, one hundred one".