20144233211 has 16 divisors (see below), whose sum is σ = 20589940800. Its totient is φ = 19703996928.

The previous prime is 20144233189. The next prime is 20144233223. The reversal of 20144233211 is 11233244102.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20144233211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20144233231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8312546 + ... + 8314968.

It is an arithmetic number, because the mean of its divisors is an integer number (1286871300).

Almost surely, 2^20144233211 is an apocalyptic number.

20144233211 is a deficient number, since it is larger than the sum of its proper divisors (445707589).

20144233211 is a wasteful number, since it uses less digits than its factorization.

20144233211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3478.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 20144233211 its reverse (11233244102), we get a palindrome (31377477313).

The spelling of 20144233211 in words is "twenty billion, one hundred forty-four million, two hundred thirty-three thousand, two hundred eleven".