1121501505 has 32 divisors (see below), whose sum is σ = 1970979840. Its totient is φ = 542013120.

The previous prime is 1121501501. The next prime is 1121501569. The reversal of 1121501505 is 5051051211.

It is not a de Polignac number, because 1121501505 - 2² = 1121501501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1121501501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78991 + ... + 92100.

It is an arithmetic number, because the mean of its divisors is an integer number (61593120).

Almost surely, 2^1121501505 is an apocalyptic number.

1121501505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1121501505 is a deficient number, since it is larger than the sum of its proper divisors (849478335).

1121501505 is a wasteful number, since it uses less digits than its factorization.

1121501505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171141.

The product of its (nonzero) digits is 250, while the sum is 21.

The square root of 1121501505 is about 33488.8265694694. The cubic root of 1121501505 is about 1038.9626938435.

Adding to 1121501505 its reverse (5051051211), we get a palindrome (6172552716).

The spelling of 1121501505 in words is "one billion, one hundred twenty-one million, five hundred one thousand, five hundred five".