22012221002120 has 128 divisors (see below), whose sum is σ = 52991212953600. Its totient is φ = 8204897836800.

The previous prime is 22012221002119. The next prime is 22012221002131. The reversal of 22012221002120 is 2120012221022.

It is a happy number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 22783517 + ... + 23730003.

It is an arithmetic number, because the mean of its divisors is an integer number (413993851200).

Almost surely, 2^{22012221002120} is an apocalyptic number.

22012221002120 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 22012221002120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26495606476800).

22012221002120 is an abundant number, since it is smaller than the sum of its proper divisors (30978991951480).

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

22012221002120 is a wasteful number, since it uses less digits than its factorization.

22012221002120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947019 (or 947015 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22012221002120 its reverse (2120012221022), we get a palindrome (24132233223142).

The spelling of 22012221002120 in words is "twenty-two trillion, twelve billion, two hundred twenty-one million, two thousand, one hundred twenty".