1001121085843 has 2 divisors, whose sum is σ = 1001121085844. Its totient is φ = 1001121085842.

The previous prime is 1001121085817. The next prime is 1001121085883. The reversal of 1001121085843 is 3485801211001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1001121085843 - 2³³ = 992531151251 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1001121085799 and 1001121085808.

It is not a weakly prime, because it can be changed into another prime (1001121085883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500560542921 + 500560542922.

It is an arithmetic number, because the mean of its divisors is an integer number (500560542922).

Almost surely, 2^{1001121085843} is an apocalyptic number.

1001121085843 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001121085843 is an equidigital number, since it uses as much as digits as its factorization.

1001121085843 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7680, while the sum is 34.

Adding to 1001121085843 its reverse (3485801211001), we get a palindrome (4486922296844).

The spelling of 1001121085843 in words is "one trillion, one billion, one hundred twenty-one million, eighty-five thousand, eight hundred forty-three".