213023121011 has 8 divisors (see below), whose sum is σ = 220405045248. Its totient is φ = 205673085000.

The previous prime is 213023120941. The next prime is 213023121029. The reversal of 213023121011 is 110121320312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213023121011 - 2³⁴ = 195843251827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213023121061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7958465 + ... + 7985186.

It is an arithmetic number, because the mean of its divisors is an integer number (27550630656).

Almost surely, 2^213023121011 is an apocalyptic number.

213023121011 is a deficient number, since it is larger than the sum of its proper divisors (7381924237).

213023121011 is a wasteful number, since it uses less digits than its factorization.

213023121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15944113.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 213023121011 its reverse (110121320312), we get a palindrome (323144441323).

The spelling of 213023121011 in words is "two hundred thirteen billion, twenty-three million, one hundred twenty-one thousand, eleven".