212021113413 has 4 divisors (see below), whose sum is σ = 282694817888. Its totient is φ = 141347408940.

The previous prime is 212021113391. The next prime is 212021113441. The reversal of 212021113413 is 314311120212.

212021113413 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 not a de Polignac number, because 212021113413 - 2¹⁶ = 212021047877 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212021113413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021113813) 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, 35336852233 + ... + 35336852238.

It is an arithmetic number, because the mean of its divisors is an integer number (70673704472).

Almost surely, 2^212021113413 is an apocalyptic number.

It is an amenable number.

212021113413 is a deficient number, since it is larger than the sum of its proper divisors (70673704475).

212021113413 is an equidigital number, since it uses as much as digits as its factorization.

212021113413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70673704474.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 212021113413 its reverse (314311120212), we get a palindrome (526332233625).

The spelling of 212021113413 in words is "two hundred twelve billion, twenty-one million, one hundred thirteen thousand, four hundred thirteen".