11111344401 has 16 divisors (see below), whose sum is σ = 15137337600. Its totient is φ = 7246603008.

The previous prime is 11111344393. The next prime is 11111344421. The reversal of 11111344401 is 10444311111.

It is not a de Polignac number, because 11111344401 - 2³ = 11111344393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11111344421) 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, 308505 + ... + 342633.

It is an arithmetic number, because the mean of its divisors is an integer number (946083600).

Almost surely, 2^11111344401 is an apocalyptic number.

It is an amenable number.

11111344401 is a deficient number, since it is larger than the sum of its proper divisors (4025993199).

11111344401 is a wasteful number, since it uses less digits than its factorization.

11111344401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36488.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 11111344401 its reverse (10444311111), we get a palindrome (21555655512).

The spelling of 11111344401 in words is "eleven billion, one hundred eleven million, three hundred forty-four thousand, four hundred one".