1123211001 has 16 divisors (see below), whose sum is σ = 1649942208. Its totient is φ = 673992000.

The previous prime is 1123210969. The next prime is 1123211039. The reversal of 1123211001 is 1001123211.

It is not a de Polignac number, because 1123211001 - 2⁵ = 1123210969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1123211071) 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, 165166 + ... + 171831.

It is an arithmetic number, because the mean of its divisors is an integer number (103121388).

Almost surely, 2^1123211001 is an apocalyptic number.

1123211001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1123211001 is a deficient number, since it is larger than the sum of its proper divisors (526731207).

1123211001 is a wasteful number, since it uses less digits than its factorization.

1123211001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337112.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 1123211001 is about 33514.3402292213. The cubic root of 1123211001 is about 1039.4903200933.

Adding to 1123211001 its reverse (1001123211), we get a palindrome (2124334212).

The spelling of 1123211001 in words is "one billion, one hundred twenty-three million, two hundred eleven thousand, one".