22101022102221 has 24 divisors (see below), whose sum is σ = 31939779265056. Its totient is φ = 14726594463840.

The previous prime is 22101022102217. The next prime is 22101022102249. The reversal of 22101022102221 is 12220122010122.

It is a happy number.

22101022102221 is a `hidden beast` number, since 2 + 210 + 10 + 221 + 0 + 2 + 221 = 666.

It is not a de Polignac number, because 22101022102221 - 2² = 22101022102217 is a prime.

It is a super-2 number, since 2×22101022102221² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22101022102194 and 22101022102203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22101022106221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 181851151 + ... + 181972643.

It is an arithmetic number, because the mean of its divisors is an integer number (1330824136044).

Almost surely, 2^{22101022102221} is an apocalyptic number.

It is an amenable number.

22101022102221 is a deficient number, since it is larger than the sum of its proper divisors (9838757162835).

22101022102221 is a wasteful number, since it uses less digits than its factorization.

22101022102221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131513 (or 131510 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22101022102221 its reverse (12220122010122), we get a palindrome (34321144112343).

The spelling of 22101022102221 in words is "twenty-two trillion, one hundred one billion, twenty-two million, one hundred two thousand, two hundred twenty-one".