21120212313011 has 4 divisors (see below), whose sum is σ = 24137385500592. Its totient is φ = 18103039125432.

The previous prime is 21120212312999. The next prime is 21120212313017. The reversal of 21120212313011 is 11031321202112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21120212313011 - 2²² = 21120208118707 is a prime.

It is a super-2 number, since 2×21120212313011² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21120212313017) 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, 1508586593780 + ... + 1508586593793.

It is an arithmetic number, because the mean of its divisors is an integer number (6034346375148).

Almost surely, 2^{21120212313011} is an apocalyptic number.

21120212313011 is a deficient number, since it is larger than the sum of its proper divisors (3017173187581).

21120212313011 is an equidigital number, since it uses as much as digits as its factorization.

21120212313011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3017173187580.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 21120212313011 its reverse (11031321202112), we get a palindrome (32151533515123).

The spelling of 21120212313011 in words is "twenty-one trillion, one hundred twenty billion, two hundred twelve million, three hundred thirteen thousand, eleven".