113333300021 has 4 divisors (see below), whose sum is σ = 114055168332. Its totient is φ = 112611431712.

The previous prime is 113333299979. The next prime is 113333300077. The reversal of 113333300021 is 120003333311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120003333311 = 8623 ⋅13916657.

It can be written as a sum of positive squares in 2 ways, for example, as 9581668996 + 103751631025 = 97886^2 + 322105^2 .

It is a cyclic number.

It is not a de Polignac number, because 113333300021 - 2³⁰ = 112259558197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113333299966 and 113333300002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113333300081) 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 3 ways as a sum of consecutive naturals, for example, 360933920 + ... + 360934233.

It is an arithmetic number, because the mean of its divisors is an integer number (28513792083).

Almost surely, 2^113333300021 is an apocalyptic number.

It is an amenable number.

113333300021 is a deficient number, since it is larger than the sum of its proper divisors (721868311).

113333300021 is an equidigital number, since it uses as much as digits as its factorization.

113333300021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721868310.

The product of its (nonzero) digits is 486, while the sum is 20.

Adding to 113333300021 its reverse (120003333311), we get a palindrome (233336633332).

The spelling of 113333300021 in words is "one hundred thirteen billion, three hundred thirty-three million, three hundred thousand, twenty-one".