10321112212121 has 8 divisors (see below), whose sum is σ = 10338212216520. Its totient is φ = 10304013065472.

The previous prime is 10321112212111. The next prime is 10321112212217. The reversal of 10321112212121 is 12121221112301.

It can be written as a sum of positive squares in 4 ways, for example, as 331846275721 + 9989265936400 = 576061^2 + 3160580^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10321112212121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10321112212093 and 10321112212102.

It is not an unprimeable number, because it can be changed into a prime (10321112212111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26652875 + ... + 27037343.

It is an arithmetic number, because the mean of its divisors is an integer number (1292276527065).

Almost surely, 2^{10321112212121} is an apocalyptic number.

It is an amenable number.

10321112212121 is a deficient number, since it is larger than the sum of its proper divisors (17100004399).

10321112212121 is an equidigital number, since it uses as much as digits as its factorization.

10321112212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428875.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 10321112212121 its reverse (12121221112301), we get a palindrome (22442333324422).

The spelling of 10321112212121 in words is "ten trillion, three hundred twenty-one billion, one hundred twelve million, two hundred twelve thousand, one hundred twenty-one".