10121121202021 has 8 divisors (see below), whose sum is σ = 10198474913088. Its totient is φ = 10043768904000.

The previous prime is 10121121202009. The next prime is 10121121202063. The reversal of 10121121202021 is 12020212112101.

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

It is a cyclic number.

It is not a de Polignac number, because 10121121202021 - 2²⁷ = 10120986984293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10121121201986 and 10121121202004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121121205021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17436256 + ... + 18007366.

It is an arithmetic number, because the mean of its divisors is an integer number (1274809364136).

Almost surely, 2^{10121121202021} is an apocalyptic number.

It is an amenable number.

10121121202021 is a deficient number, since it is larger than the sum of its proper divisors (77353711067).

10121121202021 is a wasteful number, since it uses less digits than its factorization.

10121121202021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706523.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 10121121202021 its reverse (12020212112101), we get a palindrome (22141333314122).

The spelling of 10121121202021 in words is "ten trillion, one hundred twenty-one billion, one hundred twenty-one million, two hundred two thousand, twenty-one".