212021111213 has 8 divisors (see below), whose sum is σ = 212630745600. Its totient is φ = 211411808848.

The previous prime is 212021111201. The next prime is 212021111251. The reversal of 212021111213 is 312111120212.

It is a happy number.

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 212021111213 - 2⁶ = 212021111149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212021111191 and 212021111200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021111413) 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, 1225520 + ... + 1387782.

It is an arithmetic number, because the mean of its divisors is an integer number (26578843200).

Almost surely, 2^212021111213 is an apocalyptic number.

It is an amenable number.

212021111213 is a deficient number, since it is larger than the sum of its proper divisors (609634387).

212021111213 is a wasteful number, since it uses less digits than its factorization.

212021111213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166011.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 212021111213 its reverse (312111120212), we get a palindrome (524132231425).

The spelling of 212021111213 in words is "two hundred twelve billion, twenty-one million, one hundred eleven thousand, two hundred thirteen".