10031301231221 has 32 divisors (see below), whose sum is σ = 10764481029120. Its totient is φ = 9314514671616.

The previous prime is 10031301231209. The next prime is 10031301231247. The reversal of 10031301231221 is 12213210313001.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 10031301231221 - 2⁶ = 10031301231157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10031301231193 and 10031301231202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10031301231121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1635624071 + ... + 1635630203.

It is an arithmetic number, because the mean of its divisors is an integer number (336390032160).

Almost surely, 2^{10031301231221} is an apocalyptic number.

It is an amenable number.

10031301231221 is a deficient number, since it is larger than the sum of its proper divisors (733179797899).

10031301231221 is a wasteful number, since it uses less digits than its factorization.

10031301231221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8453.

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

Adding to 10031301231221 its reverse (12213210313001), we get a palindrome (22244511544222).

The spelling of 10031301231221 in words is "ten trillion, thirty-one billion, three hundred one million, two hundred thirty-one thousand, two hundred twenty-one".