21102122102222 has 8 divisors (see below), whose sum is σ = 36175066460976. Its totient is φ = 9043766615232.

The previous prime is 21102122102221. The next prime is 21102122102287. The reversal of 21102122102222 is 22220122120112.

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

It is a junction number, because it is equal to n+sod(n) for n = 21102122102194 and 21102122102203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21102122102221) 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, 753647217923 + ... + 753647217950.

It is an arithmetic number, because the mean of its divisors is an integer number (4521883307622).

Almost surely, 2^{21102122102222} is an apocalyptic number.

21102122102222 is a deficient number, since it is larger than the sum of its proper divisors (15072944358754).

21102122102222 is a wasteful number, since it uses less digits than its factorization.

21102122102222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1507294435882.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 21102122102222 its reverse (22220122120112), we get a palindrome (43322244222334).

The spelling of 21102122102222 in words is "twenty-one trillion, one hundred two billion, one hundred twenty-two million, one hundred two thousand, two hundred twenty-two".