11111451241 has 16 divisors (see below), whose sum is σ = 12850795008. Its totient is φ = 9511257600.

The previous prime is 11111451227. The next prime is 11111451257. The reversal of 11111451241 is 14215411111.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11111451241 is a prime.

It is a super-2 number, since 2×11111451241² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11111451341) 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, 427720 + ... + 452953.

It is an arithmetic number, because the mean of its divisors is an integer number (803174688).

Almost surely, 2^11111451241 is an apocalyptic number.

11111451241 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11111451241 is a deficient number, since it is larger than the sum of its proper divisors (1739343767).

11111451241 is a wasteful number, since it uses less digits than its factorization.

11111451241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880752.

The product of its digits is 160, while the sum is 22.

Adding to 11111451241 its reverse (14215411111), we get a palindrome (25326862352).

The spelling of 11111451241 in words is "eleven billion, one hundred eleven million, four hundred fifty-one thousand, two hundred forty-one".