212021203013 has 4 divisors (see below), whose sum is σ = 212296914060. Its totient is φ = 211745491968.

The previous prime is 212021203003. The next prime is 212021203039. The reversal of 212021203013 is 310302120212.

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 78239362369 + 133781840644 = 279713^2 + 365762^2 .

It is a cyclic number.

It is not a de Polignac number, because 212021203013 - 2⁴ = 212021202997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212021202982 and 212021203000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021203003) 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, 137854370 + ... + 137855907.

It is an arithmetic number, because the mean of its divisors is an integer number (53074228515).

Almost surely, 2^212021203013 is an apocalyptic number.

It is an amenable number.

212021203013 is a deficient number, since it is larger than the sum of its proper divisors (275711047).

212021203013 is an equidigital number, since it uses as much as digits as its factorization.

212021203013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275711046.

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

Adding to 212021203013 its reverse (310302120212), we get a palindrome (522323323225).

The spelling of 212021203013 in words is "two hundred twelve billion, twenty-one million, two hundred three thousand, thirteen".