1021100321143 has 8 divisors (see below), whose sum is σ = 1176160550912. Its totient is φ = 868337280216.

The previous prime is 1021100321099. The next prime is 1021100321221. The reversal of 1021100321143 is 3411230011201.

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

It is not a de Polignac number, because 1021100321143 - 2³⁷ = 883661367671 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 1021100321143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021100321443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 574296255 + ... + 574298032.

It is an arithmetic number, because the mean of its divisors is an integer number (147020068864).

Almost surely, 2^{1021100321143} is an apocalyptic number.

1021100321143 is a deficient number, since it is larger than the sum of its proper divisors (155060229769).

1021100321143 is a wasteful number, since it uses less digits than its factorization.

1021100321143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148594421.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1021100321143 its reverse (3411230011201), we get a palindrome (4432330332344).

The spelling of 1021100321143 in words is "one trillion, twenty-one billion, one hundred million, three hundred twenty-one thousand, one hundred forty-three".