1021231130243 has 16 divisors (see below), whose sum is σ = 1035865372416. Its totient is φ = 1006654612320.

The previous prime is 1021231130233. The next prime is 1021231130263. The reversal of 1021231130243 is 3420311321201.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021231130243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021231130233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90233021 + ... + 90244337.

It is an arithmetic number, because the mean of its divisors is an integer number (64741585776).

Almost surely, 2^{1021231130243} is an apocalyptic number.

1021231130243 is a deficient number, since it is larger than the sum of its proper divisors (14634242173).

1021231130243 is a wasteful number, since it uses less digits than its factorization.

1021231130243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13754.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1021231130243 its reverse (3420311321201), we get a palindrome (4441542451444).

The spelling of 1021231130243 in words is "one trillion, twenty-one billion, two hundred thirty-one million, one hundred thirty thousand, two hundred forty-three".