12002022122121 has 24 divisors (see below), whose sum is σ = 17777962729800. Its totient is φ = 7797897388800.

The previous prime is 12002022122107. The next prime is 12002022122179. The reversal of 12002022122121 is 12122122020021.

It is a happy number.

12002022122121 is a `hidden beast` number, since 1 + 200 + 2 + 0 + 221 + 221 + 21 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 169550415225 + 11832471706896 = 411765^2 + 3439836^2 .

It is not a de Polignac number, because 12002022122121 - 2¹¹ = 12002022120073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12002022122094 and 12002022122103.

It is not an unprimeable number, because it can be changed into a prime (12002022122621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16935346 + ... + 17629803.

It is an arithmetic number, because the mean of its divisors is an integer number (740748447075).

Almost surely, 2^{12002022122121} is an apocalyptic number.

It is an amenable number.

12002022122121 is a deficient number, since it is larger than the sum of its proper divisors (5775940607679).

12002022122121 is a wasteful number, since it uses less digits than its factorization.

12002022122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34566137 (or 34566134 counting only the distinct ones).

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

Adding to 12002022122121 its reverse (12122122020021), we get a palindrome (24124144142142).

The spelling of 12002022122121 in words is "twelve trillion, two billion, twenty-two million, one hundred twenty-two thousand, one hundred twenty-one".