1162123201 has 4 divisors (see below), whose sum is σ = 1223287600. Its totient is φ = 1100958804.

The previous prime is 1162123199. The next prime is 1162123211. The reversal of 1162123201 is 1023212611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1023212611 = 1051 ⋅973561.

It is a cyclic number.

It is not a de Polignac number, because 1162123201 - 2¹ = 1162123199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 61164379 = 1162123201 / (1 + 1 + 6 + 2 + 1 + 2 + 3 + 2 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1162123211) 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 3 ways as a sum of consecutive naturals, for example, 30582171 + ... + 30582208.

It is an arithmetic number, because the mean of its divisors is an integer number (305821900).

Almost surely, 2^1162123201 is an apocalyptic number.

It is an amenable number.

1162123201 is a deficient number, since it is larger than the sum of its proper divisors (61164399).

1162123201 is an equidigital number, since it uses as much as digits as its factorization.

1162123201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61164398.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1162123201 is about 34089.9281460082. The cubic root of 1162123201 is about 1051.3582425706.

Adding to 1162123201 its reverse (1023212611), we get a palindrome (2185335812).

The spelling of 1162123201 in words is "one billion, one hundred sixty-two million, one hundred twenty-three thousand, two hundred one".