10031211223021 has 4 divisors (see below), whose sum is σ = 10621282471452. Its totient is φ = 9441139974592.

The previous prime is 10031211223001. The next prime is 10031211223049. The reversal of 10031211223021 is 12032211213001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5440155067396 + 4591056155625 = 2332414^2 + 2142675^2 .

It is not a de Polignac number, because 10031211223021 - 2⁹ = 10031211222509 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10031211223021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10031211223001) 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, 295035624190 + ... + 295035624223.

It is an arithmetic number, because the mean of its divisors is an integer number (2655320617863).

Almost surely, 2^{10031211223021} is an apocalyptic number.

It is an amenable number.

10031211223021 is a deficient number, since it is larger than the sum of its proper divisors (590071248431).

10031211223021 is an equidigital number, since it uses as much as digits as its factorization.

10031211223021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590071248430.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 10031211223021 its reverse (12032211213001), we get a palindrome (22063422436022).

The spelling of 10031211223021 in words is "ten trillion, thirty-one billion, two hundred eleven million, two hundred twenty-three thousand, twenty-one".