212021301013 has 4 divisors (see below), whose sum is σ = 215497060108. Its totient is φ = 208545541920.

The previous prime is 212021300989. The next prime is 212021301047. The reversal of 212021301013 is 310103120212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 73917646884 + 138103654129 = 271878^2 + 371623^2 .

It is a cyclic number.

It is not a de Polignac number, because 212021301013 - 2⁹ = 212021300501 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 (212021301053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1737879456 + ... + 1737879577.

It is an arithmetic number, because the mean of its divisors is an integer number (53874265027).

Almost surely, 2^212021301013 is an apocalyptic number.

It is an amenable number.

212021301013 is a deficient number, since it is larger than the sum of its proper divisors (3475759095).

212021301013 is an equidigital number, since it uses as much as digits as its factorization.

212021301013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3475759094.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 212021301013 its reverse (310103120212), we get a palindrome (522124421225).

The spelling of 212021301013 in words is "two hundred twelve billion, twenty-one million, three hundred one thousand, thirteen".