212021203113 has 6 divisors (see below), whose sum is σ = 306252848954. Its totient is φ = 141347468736.

The previous prime is 212021203087. The next prime is 212021203157. The reversal of 212021203113 is 311302120212.

212021203113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 168812513424 + 43208689689 = 410868^2 + 207867^2 .

It is not a de Polignac number, because 212021203113 - 2¹² = 212021199017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212021213113) 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 5 ways as a sum of consecutive naturals, for example, 11778955720 + ... + 11778955737.

Almost surely, 2^212021203113 is an apocalyptic number.

It is an amenable number.

212021203113 is a deficient number, since it is larger than the sum of its proper divisors (94231645841).

212021203113 is a wasteful number, since it uses less digits than its factorization.

212021203113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23557911463 (or 23557911460 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 212021203113 its reverse (311302120212), we get a palindrome (523323323325).

The spelling of 212021203113 in words is "two hundred twelve billion, twenty-one million, two hundred three thousand, one hundred thirteen".