22221101123220 has 24 divisors (see below), whose sum is σ = 62219083145184. Its totient is φ = 5925626966176.

The previous prime is 22221101123167. The next prime is 22221101123303. The reversal of 22221101123220 is 2232110112222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185175842634 + ... + 185175842753.

It is an arithmetic number, because the mean of its divisors is an integer number (2592461797716).

Almost surely, 2^{22221101123220} is an apocalyptic number.

22221101123220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22221101123220 is an abundant number, since it is smaller than the sum of its proper divisors (39997982021964).

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

22221101123220 is a wasteful number, since it uses less digits than its factorization.

22221101123220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370351685399 (or 370351685397 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 22221101123220 its reverse (2232110112222), we get a palindrome (24453211235442).

The spelling of 22221101123220 in words is "twenty-two trillion, two hundred twenty-one billion, one hundred one million, one hundred twenty-three thousand, two hundred twenty".