213011012113 has 4 divisors (see below), whose sum is σ = 213473075508. Its totient is φ = 212548948720.

The previous prime is 213011012107. The next prime is 213011012143. The reversal of 213011012113 is 311210110312.

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 43721555409 + 169289456704 = 209097^2 + 411448^2 .

It is a cyclic number.

It is not a de Polignac number, because 213011012113 - 2³⁷ = 75572058641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213011012143) 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, 231031006 + ... + 231031927.

It is an arithmetic number, because the mean of its divisors is an integer number (53368268877).

Almost surely, 2^213011012113 is an apocalyptic number.

It is an amenable number.

213011012113 is a deficient number, since it is larger than the sum of its proper divisors (462063395).

213011012113 is an equidigital number, since it uses as much as digits as its factorization.

213011012113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462063394.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 213011012113 its reverse (311210110312), we get a palindrome (524221122425).

The spelling of 213011012113 in words is "two hundred thirteen billion, eleven million, twelve thousand, one hundred thirteen".