10311321102121 has 4 divisors (see below), whose sum is σ = 11104499648452. Its totient is φ = 9518142555792.

The previous prime is 10311321102077. The next prime is 10311321102143. The reversal of 10311321102121 is 12120112311301.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4361936675625 + 5949384426496 = 2088525^2 + 2439136^2 .

It is not a de Polignac number, because 10311321102121 - 2¹⁵ = 10311321069353 is a prime.

It is a super-2 number, since 2×10311321102121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10311321109121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 396589273146 + ... + 396589273171.

It is an arithmetic number, because the mean of its divisors is an integer number (2776124912113).

Almost surely, 2^{10311321102121} is an apocalyptic number.

It is an amenable number.

10311321102121 is a deficient number, since it is larger than the sum of its proper divisors (793178546331).

10311321102121 is an equidigital number, since it uses as much as digits as its factorization.

10311321102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793178546330.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 10311321102121 its reverse (12120112311301), we get a palindrome (22431433413422).

The spelling of 10311321102121 in words is "ten trillion, three hundred eleven billion, three hundred twenty-one million, one hundred two thousand, one hundred twenty-one".