1232111001 has 32 divisors (see below), whose sum is σ = 1828632960. Its totient is φ = 731635200.

The previous prime is 1232110991. The next prime is 1232111003. The reversal of 1232111001 is 1001112321.

It is not a de Polignac number, because 1232111001 - 2⁹ = 1232110489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1232111003) 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 31 ways as a sum of consecutive naturals, for example, 588765 + ... + 590853.

It is an arithmetic number, because the mean of its divisors is an integer number (57144780).

Almost surely, 2^1232111001 is an apocalyptic number.

1232111001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1232111001 is a deficient number, since it is larger than the sum of its proper divisors (596521959).

1232111001 is a wasteful number, since it uses less digits than its factorization.

1232111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2457.

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

The square root of 1232111001 is about 35101.4387311973. The cubic root of 1232111001 is about 1072.0538769726.

Adding to 1232111001 its reverse (1001112321), we get a palindrome (2233223322).

The spelling of 1232111001 in words is "one billion, two hundred thirty-two million, one hundred eleven thousand, one".