1000121230231 has 4 divisors (see below), whose sum is σ = 1002907083600. Its totient is φ = 997335376864.

The previous prime is 1000121230133. The next prime is 1000121230249. The reversal of 1000121230231 is 1320321210001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1000121230231 - 2⁷ = 1000121230103 is a prime.

It is a super-2 number, since 2×1000121230231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000121230531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1392926146 + ... + 1392926863.

It is an arithmetic number, because the mean of its divisors is an integer number (250726770900).

Almost surely, 2^{1000121230231} is an apocalyptic number.

1000121230231 is a deficient number, since it is larger than the sum of its proper divisors (2785853369).

1000121230231 is an equidigital number, since it uses as much as digits as its factorization.

1000121230231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2785853368.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1000121230231 its reverse (1320321210001), we get a palindrome (2320442440232).

The spelling of 1000121230231 in words is "one trillion, one hundred twenty-one million, two hundred thirty thousand, two hundred thirty-one".