20233110211021 has 4 divisors (see below), whose sum is σ = 20247911317152. Its totient is φ = 20218309104892.

The previous prime is 20233110210913. The next prime is 20233110211031. The reversal of 20233110211021 is 12011201133202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20233110211021 is a prime.

It is a super-2 number, since 2×20233110211021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20233110211021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20233110211031) 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, 7400551015 + ... + 7400553748.

It is an arithmetic number, because the mean of its divisors is an integer number (5061977829288).

Almost surely, 2^{20233110211021} is an apocalyptic number.

It is an amenable number.

20233110211021 is a deficient number, since it is larger than the sum of its proper divisors (14801106131).

20233110211021 is a wasteful number, since it uses less digits than its factorization.

20233110211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14801106130.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 20233110211021 its reverse (12011201133202), we get a palindrome (32244311344223).

The spelling of 20233110211021 in words is "twenty trillion, two hundred thirty-three billion, one hundred ten million, two hundred eleven thousand, twenty-one".