1021113133123 has 8 divisors (see below), whose sum is σ = 1081190661120. Its totient is φ = 961036944000.

The previous prime is 1021113133093. The next prime is 1021113133151. The reversal of 1021113133123 is 3213313111201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021113133123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021113133094 and 1021113133103.

It is not an unprimeable number, because it can be changed into a prime (1021113133723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1533433 + ... + 2096101.

It is an arithmetic number, because the mean of its divisors is an integer number (135148832640).

Almost surely, 2^{1021113133123} is an apocalyptic number.

1021113133123 is a deficient number, since it is larger than the sum of its proper divisors (60077527997).

1021113133123 is a wasteful number, since it uses less digits than its factorization.

1021113133123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669437.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 1021113133123 its reverse (3213313111201), we get a palindrome (4234426244324).

The spelling of 1021113133123 in words is "one trillion, twenty-one billion, one hundred thirteen million, one hundred thirty-three thousand, one hundred twenty-three".