212002220211121 has 8 divisors (see below), whose sum is σ = 223160947481600. Its totient is φ = 200843564508720.

The previous prime is 212002220211059. The next prime is 212002220211143. The reversal of 212002220211121 is 121112022200212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212002220211121 - 2³¹ = 212000072727473 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212002220211161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11757681 + ... + 23711758.

It is an arithmetic number, because the mean of its divisors is an integer number (27895118435200).

Almost surely, 2^{212002220211121} is an apocalyptic number.

It is an amenable number.

212002220211121 is a deficient number, since it is larger than the sum of its proper divisors (11158727270479).

212002220211121 is a wasteful number, since it uses less digits than its factorization.

212002220211121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35784039.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 212002220211121 its reverse (121112022200212), we get a palindrome (333114242411333).

The spelling of 212002220211121 in words is "two hundred twelve trillion, two billion, two hundred twenty million, two hundred eleven thousand, one hundred twenty-one".