22002221120121 has 64 divisors (see below), whose sum is σ = 37031049953280. Its totient is φ = 12790328544000.

The previous prime is 22002221120039. The next prime is 22002221120177. The reversal of 22002221120121 is 12102112220022.

It is a happy number.

22002221120121 is a `hidden beast` number, since 2 + 200 + 2 + 221 + 120 + 121 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-22002221120121 is a prime.

It is a super-2 number, since 2×22002221120121² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22002221120094 and 22002221120103.

It is not an unprimeable number, because it can be changed into a prime (22002221120221) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9533625 + ... + 11614406.

It is an arithmetic number, because the mean of its divisors is an integer number (578610155520).

Almost surely, 2^{22002221120121} is an apocalyptic number.

It is an amenable number.

22002221120121 is a deficient number, since it is larger than the sum of its proper divisors (15028828833159).

22002221120121 is a wasteful number, since it uses less digits than its factorization.

22002221120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21148195 (or 21148189 counting only the distinct ones).

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

Adding to 22002221120121 its reverse (12102112220022), we get a palindrome (34104333340143).

The spelling of 22002221120121 in words is "twenty-two trillion, two billion, two hundred twenty-one million, one hundred twenty thousand, one hundred twenty-one".