11131121024 has 16 divisors (see below), whose sum is σ = 22175280420. Its totient is φ = 5565560448.

The previous prime is 11131121021. The next prime is 11131121129. The reversal of 11131121024 is 42012113111.

It is a tau number, because it is divible by the number of its divisors (16).

It is a junction number, because it is equal to n+sod(n) for n = 11131120993 and 11131121011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11131121021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43480814 + ... + 43481069.

Almost surely, 2^11131121024 is an apocalyptic number.

It is an amenable number.

11131121024 is a deficient number, since it is larger than the sum of its proper divisors (11044159396).

11131121024 is an frugal number, since it uses more digits than its factorization.

11131121024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86961897 (or 86961885 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 11131121024 its reverse (42012113111), we get a palindrome (53143234135).

The spelling of 11131121024 in words is "eleven billion, one hundred thirty-one million, one hundred twenty-one thousand, twenty-four".