22221121101020 has 48 divisors (see below), whose sum is σ = 47734204815360. Its totient is φ = 8685278439744.

The previous prime is 22221121100921. The next prime is 22221121101029. The reversal of 22221121101020 is 2010112112222.

It is a self number, because there is not a number n which added to its sum of digits gives 22221121101020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221121101029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18513044 + ... + 19676763.

It is an arithmetic number, because the mean of its divisors is an integer number (994462600320).

Almost surely, 2^{22221121101020} is an apocalyptic number.

22221121101020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22221121101020 is an abundant number, since it is smaller than the sum of its proper divisors (25513083714340).

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

22221121101020 is a wasteful number, since it uses less digits than its factorization.

22221121101020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38190482 (or 38190480 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22221121101020 its reverse (2010112112222), we get a palindrome (24231233213242).

The spelling of 22221121101020 in words is "twenty-two trillion, two hundred twenty-one billion, one hundred twenty-one million, one hundred one thousand, twenty".