212021100213 has 16 divisors (see below), whose sum is σ = 304448913216. Its totient is φ = 130470940800.

The previous prime is 212021100173. The next prime is 212021100253. The reversal of 212021100213 is 312001120212.

It is an interprime number because it is at equal distance from previous prime (212021100173) and next prime (212021100253).

It is not a de Polignac number, because 212021100213 - 2¹⁸ = 212020838069 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212021100192 and 212021100201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021100253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2416513 + ... + 2502713.

It is an arithmetic number, because the mean of its divisors is an integer number (19028057076).

Almost surely, 2^212021100213 is an apocalyptic number.

It is an amenable number.

212021100213 is a deficient number, since it is larger than the sum of its proper divisors (92427813003).

212021100213 is a wasteful number, since it uses less digits than its factorization.

212021100213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149284.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 212021100213 its reverse (312001120212), we get a palindrome (524022220425).

The spelling of 212021100213 in words is "two hundred twelve billion, twenty-one million, one hundred thousand, two hundred thirteen".