10321031111221 has 4 divisors (see below), whose sum is σ = 10321140110944. Its totient is φ = 10320922111500.

The previous prime is 10321031111177. The next prime is 10321031111263. The reversal of 10321031111221 is 12211113012301.

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 not a de Polignac number, because 10321031111221 - 2¹¹ = 10321031109173 is a prime.

It is a super-2 number, since 2×10321031111221² (a number of 27 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 (10321031118221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54357705 + ... + 54547246.

It is an arithmetic number, because the mean of its divisors is an integer number (2580285027736).

Almost surely, 2^{10321031111221} is an apocalyptic number.

It is an amenable number.

10321031111221 is a deficient number, since it is larger than the sum of its proper divisors (108999723).

10321031111221 is an equidigital number, since it uses as much as digits as its factorization.

10321031111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108999722.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 10321031111221 its reverse (12211113012301), we get a palindrome (22532144123522).

The spelling of 10321031111221 in words is "ten trillion, three hundred twenty-one billion, thirty-one million, one hundred eleven thousand, two hundred twenty-one".