21110200112213 has 4 divisors (see below), whose sum is σ = 22351976589420. Its totient is φ = 19868423635008.

The previous prime is 21110200112203. The next prime is 21110200112263. The reversal of 21110200112213 is 31221100201112.

It is a happy number.

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 17932116644689 + 3178083467524 = 4234633^2 + 1782718^2 .

It is a cyclic number.

It is not a de Polignac number, because 21110200112213 - 2²⁴ = 21110183334997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 1241776477189 = 21110200112213 / (2 + 1 + 1 + 1 + 0 + 2 + 0 + 0 + 1 + 1 + 2 + 2 + 1 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21110200112191 and 21110200112200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21110200112203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 620888238578 + ... + 620888238611.

It is an arithmetic number, because the mean of its divisors is an integer number (5587994147355).

Almost surely, 2^{21110200112213} is an apocalyptic number.

It is an amenable number.

21110200112213 is a deficient number, since it is larger than the sum of its proper divisors (1241776477207).

21110200112213 is a wasteful number, since it uses less digits than its factorization.

21110200112213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241776477206.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 21110200112213 its reverse (31221100201112), we get a palindrome (52331300313325).

The spelling of 21110200112213 in words is "twenty-one trillion, one hundred ten billion, two hundred million, one hundred twelve thousand, two hundred thirteen".