11111241999 has 32 divisors (see below), whose sum is σ = 17468043264. Its totient is φ = 6193572480.

The previous prime is 11111241989. The next prime is 11111242001. The reversal of 11111241999 is 99914211111.

It is not a de Polignac number, because 11111241999 - 2²¹ = 11109144847 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111241989) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72082 + ... + 165584.

It is an arithmetic number, because the mean of its divisors is an integer number (545876352).

Almost surely, 2^11111241999 is an apocalyptic number.

11111241999 is a deficient number, since it is larger than the sum of its proper divisors (6356801265).

11111241999 is a wasteful number, since it uses less digits than its factorization.

11111241999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93807.

The product of its digits is 5832, while the sum is 39.

The spelling of 11111241999 in words is "eleven billion, one hundred eleven million, two hundred forty-one thousand, nine hundred ninety-nine".