212020021313 has 4 divisors (see below), whose sum is σ = 212023857600. Its totient is φ = 212016185028.

The previous prime is 212020021249. The next prime is 212020021373. The reversal of 212020021313 is 313120020212.

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 212020021313 - 2⁶ = 212020021249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212020021291 and 212020021300.

It is not an unprimeable number, because it can be changed into a prime (212020021373) 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, 1834013 + ... + 1946186.

It is an arithmetic number, because the mean of its divisors is an integer number (53005964400).

Almost surely, 2^212020021313 is an apocalyptic number.

It is an amenable number.

212020021313 is a deficient number, since it is larger than the sum of its proper divisors (3836287).

212020021313 is an equidigital number, since it uses as much as digits as its factorization.

212020021313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3836286.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 212020021313 its reverse (313120020212), we get a palindrome (525140041525).

The spelling of 212020021313 in words is "two hundred twelve billion, twenty million, twenty-one thousand, three hundred thirteen".