11211444404111 has 12 divisors (see below), whose sum is σ = 13728299271480. Its totient is φ = 9104030041680.

The previous prime is 11211444404023. The next prime is 11211444404143. The reversal of 11211444404111 is 11140444411211.

It is a happy number.

It is not a de Polignac number, because 11211444404111 - 2²⁶ = 11211377295247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211444604111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6021182960 + ... + 6021184821.

It is an arithmetic number, because the mean of its divisors is an integer number (1144024939290).

Almost surely, 2^{11211444404111} is an apocalyptic number.

11211444404111 is a deficient number, since it is larger than the sum of its proper divisors (2516854867369).

11211444404111 is a wasteful number, since it uses less digits than its factorization.

11211444404111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12042367814 (or 12042367807 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 29.

Adding to 11211444404111 its reverse (11140444411211), we get a palindrome (22351888815322).

It can be divided in two parts, 1121144 and 4404111, that added together give a palindrome (5525255).

The spelling of 11211444404111 in words is "eleven trillion, two hundred eleven billion, four hundred forty-four million, four hundred four thousand, one hundred eleven".