212002201121 has 16 divisors (see below), whose sum is σ = 232460673984. Its totient is φ = 192543074304.

The previous prime is 212002201109. The next prime is 212002201123. The reversal of 212002201121 is 121102200212.

It is a cyclic number.

It is not a de Polignac number, because 212002201121 - 2³⁰ = 210928459297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212002201096 and 212002201105.

It is not an unprimeable number, because it can be changed into a prime (212002201123) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1686416 + ... + 1807761.

It is an arithmetic number, because the mean of its divisors is an integer number (14528792124).

Almost surely, 2^212002201121 is an apocalyptic number.

It is an amenable number.

212002201121 is a deficient number, since it is larger than the sum of its proper divisors (20458472863).

212002201121 is a wasteful number, since it uses less digits than its factorization.

212002201121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3494320.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 212002201121 its reverse (121102200212), we get a palindrome (333104401333).

Subtracting from 212002201121 its reverse (121102200212), we obtain a palindrome (90900000909).

The spelling of 212002201121 in words is "two hundred twelve billion, two million, two hundred one thousand, one hundred twenty-one".