231222133001 has 4 divisors (see below), whose sum is σ = 236599391952. Its totient is φ = 225844874052.

The previous prime is 231222132961. The next prime is 231222133019. The reversal of 231222133001 is 100331222132.

231222133001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231222133001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231222133501) 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 3 ways as a sum of consecutive naturals, for example, 2688629411 + ... + 2688629496.

It is an arithmetic number, because the mean of its divisors is an integer number (59149847988).

Almost surely, 2^231222133001 is an apocalyptic number.

It is an amenable number.

231222133001 is a deficient number, since it is larger than the sum of its proper divisors (5377258951).

231222133001 is an equidigital number, since it uses as much as digits as its factorization.

231222133001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5377258950.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 231222133001 its reverse (100331222132), we get a palindrome (331553355133).

The spelling of 231222133001 in words is "two hundred thirty-one billion, two hundred twenty-two million, one hundred thirty-three thousand, one".