22221222121120 has 48 divisors (see below), whose sum is σ = 57270149743968. Its totient is φ = 8080444407040.

The previous prime is 22221222121093. The next prime is 22221222121121. The reversal of 22221222121120 is 2112122212222.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 22221222121091 and 22221222121100.

It is not an unprimeable number, because it can be changed into a prime (22221222121121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6312845434 + ... + 6312848953.

It is an arithmetic number, because the mean of its divisors is an integer number (1193128119666).

Almost surely, 2^{22221222121120} is an apocalyptic number.

22221222121120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22221222121120 is an abundant number, since it is smaller than the sum of its proper divisors (35048927622848).

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

22221222121120 is a wasteful number, since it uses less digits than its factorization.

22221222121120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12625694413 (or 12625694405 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 22221222121120 its reverse (2112122212222), we get a palindrome (24333344333342).

The spelling of 22221222121120 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred twenty-two million, one hundred twenty-one thousand, one hundred twenty".