1000231213121 has 8 divisors (see below), whose sum is σ = 1203285670080. Its totient is φ = 812217827088.

The previous prime is 1000231213103. The next prime is 1000231213151. The reversal of 1000231213121 is 1213121320001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1000231213121 - 2⁶ = 1000231213057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1000231213121.

It is not an unprimeable number, because it can be changed into a prime (1000231213151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3760267586 + ... + 3760267851.

It is an arithmetic number, because the mean of its divisors is an integer number (150410708760).

Almost surely, 2^{1000231213121} is an apocalyptic number.

It is an amenable number.

1000231213121 is a deficient number, since it is larger than the sum of its proper divisors (203054456959).

1000231213121 is an equidigital number, since it uses as much as digits as its factorization.

1000231213121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7520535463.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1000231213121 its reverse (1213121320001), we get a palindrome (2213352533122).

The spelling of 1000231213121 in words is "one trillion, two hundred thirty-one million, two hundred thirteen thousand, one hundred twenty-one".