1231322213001 has 32 divisors (see below), whose sum is σ = 1663526636800. Its totient is φ = 810052669440.

The previous prime is 1231322212963. The next prime is 1231322213027. The reversal of 1231322213001 is 1003122231321.

It is not a de Polignac number, because 1231322213001 - 2¹¹ = 1231322210953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231322213071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 152217765 + ... + 152225853.

It is an arithmetic number, because the mean of its divisors is an integer number (51985207400).

Almost surely, 2^{1231322213001} is an apocalyptic number.

It is an amenable number.

1231322213001 is a deficient number, since it is larger than the sum of its proper divisors (432204423799).

1231322213001 is an equidigital number, since it uses as much as digits as its factorization.

1231322213001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9649.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1231322213001 its reverse (1003122231321), we get a palindrome (2234444444322).

The spelling of 1231322213001 in words is "one trillion, two hundred thirty-one billion, three hundred twenty-two million, two hundred thirteen thousand, one".