11121521055 has 8 divisors (see below), whose sum is σ = 17794433712. Its totient is φ = 5931477888.

The previous prime is 11121521041. The next prime is 11121521093. The reversal of 11121521055 is 55012512111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11121521055 - 2¹⁴ = 11121504671 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370717354 + ... + 370717383.

It is an arithmetic number, because the mean of its divisors is an integer number (2224304214).

Almost surely, 2^11121521055 is an apocalyptic number.

11121521055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11121521055 is a deficient number, since it is larger than the sum of its proper divisors (6672912657).

11121521055 is an equidigital number, since it uses as much as digits as its factorization.

11121521055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741434745.

The product of its (nonzero) digits is 500, while the sum is 24.

The spelling of 11121521055 in words is "eleven billion, one hundred twenty-one million, five hundred twenty-one thousand, fifty-five".