1121501361 has 16 divisors (see below), whose sum is σ = 1531157760. Its totient is φ = 729780240.

The previous prime is 1121501351. The next prime is 1121501363. The reversal of 1121501361 is 1631051211.

It is a happy number.

It is not a de Polignac number, because 1121501361 - 2¹⁹ = 1120977073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1121501363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 331006 + ... + 334376.

It is an arithmetic number, because the mean of its divisors is an integer number (95697360).

Almost surely, 2^1121501361 is an apocalyptic number.

It is an amenable number.

1121501361 is a deficient number, since it is larger than the sum of its proper divisors (409656399).

1121501361 is a wasteful number, since it uses less digits than its factorization.

1121501361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5996.

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 1121501361 is about 33488.8244194985. The cubic root of 1121501361 is about 1038.9626493762.

Adding to 1121501361 its reverse (1631051211), we get a palindrome (2752552572).

The spelling of 1121501361 in words is "one billion, one hundred twenty-one million, five hundred one thousand, three hundred sixty-one".