10212110111321 has 6 divisors (see below), whose sum is σ = 10343013628122. Its totient is φ = 10082842888560.

The previous prime is 10212110111263. The next prime is 10212110111353. The reversal of 10212110111321 is 12311101121201.

It can be written as a sum of positive squares in only one way, i.e., 9963145038025 + 248965073296 = 3156445^2 + 498964^2 .

It is not a de Polignac number, because 10212110111321 - 2⁶ = 10212110111257 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 10212110111321.

It is not an unprimeable number, because it can be changed into a prime (10212110101321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 818140700 + ... + 818153181.

It is an arithmetic number, because the mean of its divisors is an integer number (1723835604687).

Almost surely, 2^{10212110111321} is an apocalyptic number.

It is an amenable number.

10212110111321 is a deficient number, since it is larger than the sum of its proper divisors (130903516801).

10212110111321 is an frugal number, since it uses more digits than its factorization.

10212110111321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636294039 (or 1636293960 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 10212110111321 its reverse (12311101121201), we get a palindrome (22523211232522).

The spelling of 10212110111321 in words is "ten trillion, two hundred twelve billion, one hundred ten million, one hundred eleven thousand, three hundred twenty-one".