12021302313211 has 4 divisors (see below), whose sum is σ = 12021494326632. Its totient is φ = 12021110299792.

The previous prime is 12021302313191. The next prime is 12021302313239. The reversal of 12021302313211 is 11231320312021.

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 12021302313211 - 2¹¹ = 12021302311163 is a prime.

It is a super-2 number, since 2×12021302313211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12021302353211) 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, 95912770 + ... + 96038023.

It is an arithmetic number, because the mean of its divisors is an integer number (3005373581658).

Almost surely, 2^{12021302313211} is an apocalyptic number.

12021302313211 is a deficient number, since it is larger than the sum of its proper divisors (192013421).

12021302313211 is an equidigital number, since it uses as much as digits as its factorization.

12021302313211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192013420.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 12021302313211 its reverse (11231320312021), we get a palindrome (23252622625232).

The spelling of 12021302313211 in words is "twelve trillion, twenty-one billion, three hundred two million, three hundred thirteen thousand, two hundred eleven".