10031233101221 has 4 divisors (see below), whose sum is σ = 10275897323244. Its totient is φ = 9786568879200.

The previous prime is 10031233101209. The next prime is 10031233101251. The reversal of 10031233101221 is 12210133213001.

It is a happy number.

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 6092949192100 + 3938283909121 = 2468390^2 + 1984511^2 .

It is a cyclic number.

It is not a de Polignac number, because 10031233101221 - 2¹⁰ = 10031233100197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10031233101193 and 10031233101202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10031233101251) 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, 122332110950 + ... + 122332111031.

It is an arithmetic number, because the mean of its divisors is an integer number (2568974330811).

Almost surely, 2^{10031233101221} is an apocalyptic number.

It is an amenable number.

10031233101221 is a deficient number, since it is larger than the sum of its proper divisors (244664222023).

10031233101221 is an equidigital number, since it uses as much as digits as its factorization.

10031233101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244664222022.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 10031233101221 its reverse (12210133213001), we get a palindrome (22241366314222).

The spelling of 10031233101221 in words is "ten trillion, thirty-one billion, two hundred thirty-three million, one hundred one thousand, two hundred twenty-one".