212321213001 has 48 divisors (see below), whose sum is σ = 322395864960. Its totient is φ = 134391882240.

The previous prime is 212321212981. The next prime is 212321213101. The reversal of 212321213001 is 100312123212.

212321213001 is a `hidden beast` number, since 21 + 2 + 321 + 21 + 300 + 1 = 666.

212321213001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212321213001 - 2⁶ = 212321212937 is a prime.

It is a super-2 number, since 2×212321213001² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (212321213101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15968166 + ... + 15981456.

It is an arithmetic number, because the mean of its divisors is an integer number (6716580520).

Almost surely, 2^212321213001 is an apocalyptic number.

It is an amenable number.

212321213001 is a deficient number, since it is larger than the sum of its proper divisors (110074651959).

212321213001 is a wasteful number, since it uses less digits than its factorization.

212321213001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13886 (or 13883 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 212321213001 its reverse (100312123212), we get a palindrome (312633336213).

The spelling of 212321213001 in words is "two hundred twelve billion, three hundred twenty-one million, two hundred thirteen thousand, one".