20212202223211 has 4 divisors (see below), whose sum is σ = 20642249079072. Its totient is φ = 19782155367352.

The previous prime is 20212202223173. The next prime is 20212202223259. The reversal of 20212202223211 is 11232220221202.

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 20212202223211 - 2²¹ = 20212200126059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20212202223611) 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, 215023427860 + ... + 215023427953.

It is an arithmetic number, because the mean of its divisors is an integer number (5160562269768).

Almost surely, 2^{20212202223211} is an apocalyptic number.

20212202223211 is a deficient number, since it is larger than the sum of its proper divisors (430046855861).

20212202223211 is an equidigital number, since it uses as much as digits as its factorization.

20212202223211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430046855860.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 20212202223211 its reverse (11232220221202), we get a palindrome (31444422444413).

The spelling of 20212202223211 in words is "twenty trillion, two hundred twelve billion, two hundred two million, two hundred twenty-three thousand, two hundred eleven".