213133201212 has 24 divisors (see below), whose sum is σ = 501711786576. Its totient is φ = 70415688448.

The previous prime is 213133201093. The next prime is 213133201231. The reversal of 213133201212 is 212102331312.

It is a super-2 number, since 2×213133201212² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 78587583 + ... + 78590294.

It is an arithmetic number, because the mean of its divisors is an integer number (20904657774).

Almost surely, 2^213133201212 is an apocalyptic number.

It is an amenable number.

213133201212 is an abundant number, since it is smaller than the sum of its proper divisors (288578585364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213133201212 is a wasteful number, since it uses less digits than its factorization.

213133201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157177997 (or 157177995 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 213133201212 its reverse (212102331312), we get a palindrome (425235532524).

The spelling of 213133201212 in words is "two hundred thirteen billion, one hundred thirty-three million, two hundred one thousand, two hundred twelve".