1121501263 has 8 divisors (see below), whose sum is σ = 1161056448. Its totient is φ = 1082600064.

The previous prime is 1121501261. The next prime is 1121501267. The reversal of 1121501263 is 3621051211.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1121501263 - 2¹ = 1121501261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121501261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160006 + ... + 166867.

It is an arithmetic number, because the mean of its divisors is an integer number (145132056).

Almost surely, 2^1121501263 is an apocalyptic number.

1121501263 is a deficient number, since it is larger than the sum of its proper divisors (39555185).

1121501263 is an equidigital number, since it uses as much as digits as its factorization.

1121501263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326993.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 1121501263 is about 33488.8229563238. The cubic root of 1121501263 is about 1038.9626191137.

Adding to 1121501263 its reverse (3621051211), we get a palindrome (4742552474).

The spelling of 1121501263 in words is "one billion, one hundred twenty-one million, five hundred one thousand, two hundred sixty-three".