10212043331021 has 4 divisors (see below), whose sum is σ = 11670906664032. Its totient is φ = 8753179998012.

The previous prime is 10212043330999. The next prime is 10212043331051. The reversal of 10212043331021 is 12013334021201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10212043331021 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212043331051) 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 3 ways as a sum of consecutive naturals, for example, 729431666495 + ... + 729431666508.

It is an arithmetic number, because the mean of its divisors is an integer number (2917726666008).

Almost surely, 2^{10212043331021} is an apocalyptic number.

It is an amenable number.

10212043331021 is a deficient number, since it is larger than the sum of its proper divisors (1458863333011).

10212043331021 is an equidigital number, since it uses as much as digits as its factorization.

10212043331021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458863333010.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 10212043331021 its reverse (12013334021201), we get a palindrome (22225377352222).

The spelling of 10212043331021 in words is "ten trillion, two hundred twelve billion, forty-three million, three hundred thirty-one thousand, twenty-one".