13121055 has 32 divisors (see below), whose sum is σ = 23627520. Its totient is φ = 6907680.

The previous prime is 13121047. The next prime is 13121071. The reversal of 13121055 is 55012131.

13121055 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13121055 - 2³ = 13121047 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10620 + ... + 11790.

It is an arithmetic number, because the mean of its divisors is an integer number (738360).

Almost surely, 2^13121055 is an apocalyptic number.

13121055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13121055 is a deficient number, since it is larger than the sum of its proper divisors (10506465).

13121055 is a wasteful number, since it uses less digits than its factorization.

13121055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268 (or 1262 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 13121055 is about 3622.2996839025. The cubic root of 13121055 is about 235.8610632473.

Adding to 13121055 its reverse (55012131), we get a palindrome (68133186).

The spelling of 13121055 in words is "thirteen million, one hundred twenty-one thousand, fifty-five".