1121145501 has 8 divisors (see below), whose sum is σ = 1708412224. Its totient is φ = 640654560.

The previous prime is 1121145499. The next prime is 1121145569. The reversal of 1121145501 is 1055411211.

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

It is not a de Polignac number, because 1121145501 - 2¹ = 1121145499 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 53387881 = 1121145501 / (1 + 1 + 2 + 1 + 1 + 4 + 5 + 5 + 0 + 1).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121145581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26693920 + ... + 26693961.

It is an arithmetic number, because the mean of its divisors is an integer number (213551528).

Almost surely, 2^1121145501 is an apocalyptic number.

It is an amenable number.

1121145501 is a deficient number, since it is larger than the sum of its proper divisors (587266723).

1121145501 is an equidigital number, since it uses as much as digits as its factorization.

1121145501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53387891.

The product of its (nonzero) digits is 200, while the sum is 21.

The square root of 1121145501 is about 33483.5108822238. The cubic root of 1121145501 is about 1038.8527477825.

Adding to 1121145501 its reverse (1055411211), we get a palindrome (2176556712).

The spelling of 1121145501 in words is "one billion, one hundred twenty-one million, one hundred forty-five thousand, five hundred one".