1121501255 has 8 divisors (see below), whose sum is σ = 1538058912. Its totient is φ = 769029408.

The previous prime is 1121501219. The next prime is 1121501261. The reversal of 1121501255 is 5521051211.

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

It is not a de Polignac number, because 1121501255 - 2¹⁰ = 1121500231 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1121501255.

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, 16021412 + ... + 16021481.

It is an arithmetic number, because the mean of its divisors is an integer number (192257364).

Almost surely, 2^1121501255 is an apocalyptic number.

1121501255 is a deficient number, since it is larger than the sum of its proper divisors (416557657).

1121501255 is an equidigital number, since it uses as much as digits as its factorization.

1121501255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32042905.

The product of its (nonzero) digits is 500, while the sum is 23.

The square root of 1121501255 is about 33488.8228368810. The cubic root of 1121501255 is about 1038.9626166432.

Adding to 1121501255 its reverse (5521051211), we get a palindrome (6642552466).

The spelling of 1121501255 in words is "one billion, one hundred twenty-one million, five hundred one thousand, two hundred fifty-five".