1021852238069 has 16 divisors (see below), whose sum is σ = 1115144755200. Its totient is φ = 930702343296.

The previous prime is 1021852238039. The next prime is 1021852238083. The reversal of 1021852238069 is 9608322581201.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1021852238069 - 2³² = 1017557270773 is a prime.

It is a super-2 number, since 2×1021852238069² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021852238039) 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 15 ways as a sum of consecutive naturals, for example, 367709 + ... + 1476114.

It is an arithmetic number, because the mean of its divisors is an integer number (69696547200).

Almost surely, 2^{1021852238069} is an apocalyptic number.

It is an amenable number.

1021852238069 is a deficient number, since it is larger than the sum of its proper divisors (93292517131).

1021852238069 is a wasteful number, since it uses less digits than its factorization.

1021852238069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1844404.

The product of its (nonzero) digits is 414720, while the sum is 47.

The spelling of 1021852238069 in words is "one trillion, twenty-one billion, eight hundred fifty-two million, two hundred thirty-eight thousand, sixty-nine".