21101221330222 has 8 divisors (see below), whose sum is σ = 34529271267672. Its totient is φ = 9591464241000.

The previous prime is 21101221330207. The next prime is 21101221330229. The reversal of 21101221330222 is 22203312210112.

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

It is a super-3 number, since 3×21101221330222³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 959146424101 = 21101221330222 / (2 + 1 + 1 + 0 + 1 + 2 + 2 + 1 + 3 + 3 + 0 + 2 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 21101221330193 and 21101221330202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101221330229) 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, 479573212029 + ... + 479573212072.

It is an arithmetic number, because the mean of its divisors is an integer number (4316158908459).

Almost surely, 2^{21101221330222} is an apocalyptic number.

21101221330222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21101221330222 is a deficient number, since it is larger than the sum of its proper divisors (13428049937450).

21101221330222 is a wasteful number, since it uses less digits than its factorization.

21101221330222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959146424114.

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

Adding to 21101221330222 its reverse (22203312210112), we get a palindrome (43304533540334).

The spelling of 21101221330222 in words is "twenty-one trillion, one hundred one billion, two hundred twenty-one million, three hundred thirty thousand, two hundred twenty-two".