20212311331211 has 4 divisors (see below), whose sum is σ = 20439415953000. Its totient is φ = 19985206709424.

The previous prime is 20212311331189. The next prime is 20212311331271. The reversal of 20212311331211 is 11213311321202.

It is a happy number.

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 20212311331211 - 2³⁸ = 19937433424267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20212311331271) 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, 113552310761 + ... + 113552310938.

It is an arithmetic number, because the mean of its divisors is an integer number (5109853988250).

Almost surely, 2^{20212311331211} is an apocalyptic number.

20212311331211 is a deficient number, since it is larger than the sum of its proper divisors (227104621789).

20212311331211 is an equidigital number, since it uses as much as digits as its factorization.

20212311331211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227104621788.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 20212311331211 its reverse (11213311321202), we get a palindrome (31425622652413).

The spelling of 20212311331211 in words is "twenty trillion, two hundred twelve billion, three hundred eleven million, three hundred thirty-one thousand, two hundred eleven".