22101210120220 has 288 divisors, whose sum is σ = 60553138576896. Its totient is φ = 6582329740800.

The previous prime is 22101210120203. The next prime is 22101210120239. The reversal of 22101210120220 is 2202101210122.

It is a happy number.

It is a super-2 number, since 2×22101210120220² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22101210120194 and 22101210120203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 812202415 + ... + 812229625.

It is an arithmetic number, because the mean of its divisors is an integer number (210253953392).

Almost surely, 2^{22101210120220} is an apocalyptic number.

22101210120220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22101210120220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30276569288448).

22101210120220 is an abundant number, since it is smaller than the sum of its proper divisors (38451928456676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22101210120220 is a wasteful number, since it uses less digits than its factorization.

22101210120220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28281 (or 28256 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22101210120220 its reverse (2202101210122), we get a palindrome (24303311330342).

The spelling of 22101210120220 in words is "twenty-two trillion, one hundred one billion, two hundred ten million, one hundred twenty thousand, two hundred twenty".