212021230213 has 8 divisors (see below), whose sum is σ = 235696057856. Its totient is φ = 189398617200.

The previous prime is 212021230177. The next prime is 212021230217. The reversal of 212021230213 is 312032120212.

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

It is a de Polignac number, because none of the positive numbers 2^k-212021230213 is a prime.

It is a super-2 number, since 2×212021230213² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021230217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263053233 + ... + 263054038.

It is an arithmetic number, because the mean of its divisors is an integer number (29462007232).

Almost surely, 2^212021230213 is an apocalyptic number.

It is an amenable number.

212021230213 is a deficient number, since it is larger than the sum of its proper divisors (23674827643).

212021230213 is a wasteful number, since it uses less digits than its factorization.

212021230213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526107315.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 212021230213 its reverse (312032120212), we get a palindrome (524053350425).

The spelling of 212021230213 in words is "two hundred twelve billion, twenty-one million, two hundred thirty thousand, two hundred thirteen".