10031211321321 has 4 divisors (see below), whose sum is σ = 13374948428432. Its totient is φ = 6687474214212.

The previous prime is 10031211321317. The next prime is 10031211321323. The reversal of 10031211321321 is 12312311213001.

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 not a de Polignac number, because 10031211321321 - 2² = 10031211321317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10031211321323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1671868553551 + ... + 1671868553556.

It is an arithmetic number, because the mean of its divisors is an integer number (3343737107108).

Almost surely, 2^{10031211321321} is an apocalyptic number.

It is an amenable number.

10031211321321 is a deficient number, since it is larger than the sum of its proper divisors (3343737107111).

10031211321321 is an equidigital number, since it uses as much as digits as its factorization.

10031211321321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3343737107110.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 10031211321321 its reverse (12312311213001), we get a palindrome (22343522534322).

The spelling of 10031211321321 in words is "ten trillion, thirty-one billion, two hundred eleven million, three hundred twenty-one thousand, three hundred twenty-one".