113400213221 has 4 divisors (see below), whose sum is σ = 113445996972. Its totient is φ = 113354429472.

The previous prime is 113400213193. The next prime is 113400213233. The reversal of 113400213221 is 122312004311.

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 23505182596 + 89895030625 = 153314^2 + 299825^2 .

It is a cyclic number.

It is not a de Polignac number, because 113400213221 - 2¹⁰ = 113400212197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 113400213193 and 113400213202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113400213721) 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, 22888160 + ... + 22893113.

It is an arithmetic number, because the mean of its divisors is an integer number (28361499243).

Almost surely, 2^113400213221 is an apocalyptic number.

It is an amenable number.

113400213221 is a deficient number, since it is larger than the sum of its proper divisors (45783751).

113400213221 is an equidigital number, since it uses as much as digits as its factorization.

113400213221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45783750.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 113400213221 its reverse (122312004311), we get a palindrome (235712217532).

The spelling of 113400213221 in words is "one hundred thirteen billion, four hundred million, two hundred thirteen thousand, two hundred twenty-one".