20144421111 has 8 divisors (see below), whose sum is σ = 27237527424. Its totient is φ = 13240464440.

The previous prime is 20144421109. The next prime is 20144421137. The reversal of 20144421111 is 11112444102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20144421111 - 2¹ = 20144421109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20144421151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47287161 + ... + 47287586.

It is an arithmetic number, because the mean of its divisors is an integer number (3404690928).

Almost surely, 2^20144421111 is an apocalyptic number.

20144421111 is a deficient number, since it is larger than the sum of its proper divisors (7093106313).

20144421111 is an equidigital number, since it uses as much as digits as its factorization.

20144421111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94574821.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 20144421111 its reverse (11112444102), we get a palindrome (31256865213).

The spelling of 20144421111 in words is "twenty billion, one hundred forty-four million, four hundred twenty-one thousand, one hundred eleven".