1021001123133 has 12 divisors (see below), whose sum is σ = 1492547827680. Its totient is φ = 672466602696.

The previous prime is 1021001123017. The next prime is 1021001123137. The reversal of 1021001123133 is 3313211001201.

It is not a de Polignac number, because 1021001123133 - 2²⁸ = 1020732687677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021001123137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 683400273 + ... + 683401766.

It is an arithmetic number, because the mean of its divisors is an integer number (124378985640).

Almost surely, 2^{1021001123133} is an apocalyptic number.

It is an amenable number.

1021001123133 is a deficient number, since it is larger than the sum of its proper divisors (471546704547).

1021001123133 is a wasteful number, since it uses less digits than its factorization.

1021001123133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366802128 (or 1366802125 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 1021001123133 its reverse (3313211001201), we get a palindrome (4334212124334).

The spelling of 1021001123133 in words is "one trillion, twenty-one billion, one million, one hundred twenty-three thousand, one hundred thirty-three".