22012012220121 has 24 divisors (see below), whose sum is σ = 39640680016704. Its totient is φ = 11434811542560.

The previous prime is 22012012220111. The next prime is 22012012220161. The reversal of 22012012220121 is 12102221021022.

It is a happy number.

22012012220121 is a `hidden beast` number, since 220 + 1 + 201 + 2 + 220 + 1 + 21 = 666.

It is not a de Polignac number, because 22012012220121 - 2¹¹ = 22012012218073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22012012220094 and 22012012220103.

It is not an unprimeable number, because it can be changed into a prime (22012012220111) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 15881682006 + ... + 15881683391.

It is an arithmetic number, because the mean of its divisors is an integer number (1651695000696).

Almost surely, 2^{22012012220121} is an apocalyptic number.

22012012220121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22012012220121 is a deficient number, since it is larger than the sum of its proper divisors (17628667796583).

22012012220121 is a wasteful number, since it uses less digits than its factorization.

22012012220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31763365421 (or 31763365418 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22012012220121 its reverse (12102221021022), we get a palindrome (34114233241143).

The spelling of 22012012220121 in words is "twenty-two trillion, twelve billion, twelve million, two hundred twenty thousand, one hundred twenty-one".