10211321121 has 8 divisors (see below), whose sum is σ = 13617531840. Its totient is φ = 6806328912.

The previous prime is 10211321083. The next prime is 10211321123. The reversal of 10211321121 is 12112311201.

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

It is a de Polignac number, because none of the positive numbers 2^k-10211321121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10211321121.

It is not an unprimeable number, because it can be changed into a prime (10211321123) 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, 284890 + ... + 318723.

It is an arithmetic number, because the mean of its divisors is an integer number (1702191480).

Almost surely, 2^10211321121 is an apocalyptic number.

It is an amenable number.

10211321121 is a deficient number, since it is larger than the sum of its proper divisors (3406210719).

10211321121 is an equidigital number, since it uses as much as digits as its factorization.

10211321121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609255.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 10211321121 its reverse (12112311201), we get a palindrome (22323632322).

The spelling of 10211321121 in words is "ten billion, two hundred eleven million, three hundred twenty-one thousand, one hundred twenty-one".