212021101213 has 4 divisors (see below), whose sum is σ = 223180106560. Its totient is φ = 200862095868.

The previous prime is 212021101183. The next prime is 212021101219. The reversal of 212021101213 is 312101120212.

212021101213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212021101213 - 2¹³ = 212021093021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021101219) 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 3 ways as a sum of consecutive naturals, for example, 5579502645 + ... + 5579502682.

It is an arithmetic number, because the mean of its divisors is an integer number (55795026640).

Almost surely, 2^212021101213 is an apocalyptic number.

It is an amenable number.

212021101213 is a deficient number, since it is larger than the sum of its proper divisors (11159005347).

212021101213 is a wasteful number, since it uses less digits than its factorization.

212021101213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11159005346.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 212021101213 its reverse (312101120212), we get a palindrome (524122221425).

The spelling of 212021101213 in words is "two hundred twelve billion, twenty-one million, one hundred one thousand, two hundred thirteen".