20441321111 has 4 divisors (see below), whose sum is σ = 20622217872. Its totient is φ = 20260424352.

The previous prime is 20441321041. The next prime is 20441321113. The reversal of 20441321111 is 11112314402.

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 20441321111 - 2¹⁴ = 20441304727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20441321113) 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, 90448211 + ... + 90448436.

It is an arithmetic number, because the mean of its divisors is an integer number (5155554468).

Almost surely, 2^20441321111 is an apocalyptic number.

20441321111 is a deficient number, since it is larger than the sum of its proper divisors (180896761).

20441321111 is a wasteful number, since it uses less digits than its factorization.

20441321111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180896760.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 20441321111 its reverse (11112314402), we get a palindrome (31553635513).

The spelling of 20441321111 in words is "twenty billion, four hundred forty-one million, three hundred twenty-one thousand, one hundred eleven".