212030021113 has 4 divisors (see below), whose sum is σ = 212032283508. Its totient is φ = 212027758720.

The previous prime is 212030021017. The next prime is 212030021141. The reversal of 212030021113 is 311120030212.

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 143923114384 + 68106906729 = 379372^2 + 260973^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212030021113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212030121113) 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, 984256 + ... + 1180177.

It is an arithmetic number, because the mean of its divisors is an integer number (53008070877).

Almost surely, 2^212030021113 is an apocalyptic number.

It is an amenable number.

212030021113 is a deficient number, since it is larger than the sum of its proper divisors (2262395).

212030021113 is an equidigital number, since it uses as much as digits as its factorization.

212030021113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2262394.

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

Adding to 212030021113 its reverse (311120030212), we get a palindrome (523150051325).

Subtracting 212030021113 from its reverse (311120030212), we obtain a palindrome (99090009099).

The spelling of 212030021113 in words is "two hundred twelve billion, thirty million, twenty-one thousand, one hundred thirteen".