22121212001121 has 12 divisors (see below), whose sum is σ = 32017938897360. Its totient is φ = 14717439074520.

The previous prime is 22121212001069. The next prime is 22121212001233. The reversal of 22121212001121 is 12110021212122.

22121212001121 is a `hidden beast` number, since 221 + 2 + 121 + 200 + 1 + 121 = 666.

It is not a de Polignac number, because 22121212001121 - 2¹⁴ = 22121211984737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22121212001094 and 22121212001103.

It is not an unprimeable number, because it can be changed into a prime (22121212008121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2502961411 + ... + 2502970248.

It is an arithmetic number, because the mean of its divisors is an integer number (2668161574780).

Almost surely, 2^{22121212001121} is an apocalyptic number.

It is an amenable number.

22121212001121 is a deficient number, since it is larger than the sum of its proper divisors (9896726896239).

22121212001121 is a wasteful number, since it uses less digits than its factorization.

22121212001121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5005932156 (or 5005932153 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 22121212001121 its reverse (12110021212122), we get a palindrome (34231233213243).

It can be divided in two parts, 22121212001 and 121, that added together give a palindrome (22121212122).

The spelling of 22121212001121 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred twelve million, one thousand, one hundred twenty-one".