20001023322211 has 4 divisors (see below), whose sum is σ = 20001035348424. Its totient is φ = 20001011296000.

The previous prime is 20001023322199. The next prime is 20001023322233. The reversal of 20001023322211 is 11222332010002.

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 20001023322211 - 2²⁹ = 20000486451299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20001023322011) 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, 3022705 + ... + 7009906.

It is an arithmetic number, because the mean of its divisors is an integer number (5000258837106).

Almost surely, 2^{20001023322211} is an apocalyptic number.

20001023322211 is a deficient number, since it is larger than the sum of its proper divisors (12026213).

20001023322211 is a wasteful number, since it uses less digits than its factorization.

20001023322211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12026212.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20001023322211 its reverse (11222332010002), we get a palindrome (31223355332213).

The spelling of 20001023322211 in words is "twenty trillion, one billion, twenty-three million, three hundred twenty-two thousand, two hundred eleven".