1121233201 has 4 divisors (see below), whose sum is σ = 1223163504. Its totient is φ = 1019302900.

The previous prime is 1121233199. The next prime is 1121233229. The reversal of 1121233201 is 1023321211.

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.

It is not a de Polignac number, because 1121233201 - 2¹ = 1121233199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121233231) 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, 50965135 + ... + 50965156.

It is an arithmetic number, because the mean of its divisors is an integer number (305790876).

Almost surely, 2^1121233201 is an apocalyptic number.

1121233201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1121233201 is a deficient number, since it is larger than the sum of its proper divisors (101930303).

1121233201 is a wasteful number, since it uses less digits than its factorization.

1121233201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101930302.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1121233201 is about 33484.8204564397. The cubic root of 1121233201 is about 1038.8798346653.

Adding to 1121233201 its reverse (1023321211), we get a palindrome (2144554412).

It can be divided in two parts, 11 and 21233201, that added together give a palindrome (21233212).

The spelling of 1121233201 in words is "one billion, one hundred twenty-one million, two hundred thirty-three thousand, two hundred one".