10021020111121 has 8 divisors (see below), whose sum is σ = 10065418313600. Its totient is φ = 9976627459440.

The previous prime is 10021020111077. The next prime is 10021020111139. The reversal of 10021020111121 is 12111102012001.

It is a happy number.

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 10021020111121 - 2¹¹ = 10021020109073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10021020111161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2252056 + ... + 5011366.

It is an arithmetic number, because the mean of its divisors is an integer number (1258177289200).

Almost surely, 2^{10021020111121} is an apocalyptic number.

It is an amenable number.

10021020111121 is a deficient number, since it is larger than the sum of its proper divisors (44398202479).

10021020111121 is a wasteful number, since it uses less digits than its factorization.

10021020111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2775399.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 10021020111121 its reverse (12111102012001), we get a palindrome (22132122123122).

The spelling of 10021020111121 in words is "ten trillion, twenty-one billion, twenty million, one hundred eleven thousand, one hundred twenty-one".