213131121011 has 8 divisors (see below), whose sum is σ = 214457435280. Its totient is φ = 211807276128.

The previous prime is 213131120977. The next prime is 213131121013. The reversal of 213131121011 is 110121131312.

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 213131121011 - 2¹⁰ = 213131119987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213131121013) 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, 444041 + ... + 789578.

It is an arithmetic number, because the mean of its divisors is an integer number (26807179410).

Almost surely, 2^213131121011 is an apocalyptic number.

213131121011 is a deficient number, since it is larger than the sum of its proper divisors (1326314269).

213131121011 is a wasteful number, since it uses less digits than its factorization.

213131121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234693.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 213131121011 its reverse (110121131312), we get a palindrome (323252252323).

The spelling of 213131121011 in words is "two hundred thirteen billion, one hundred thirty-one million, one hundred twenty-one thousand, eleven".