10121110012021 has 4 divisors (see below), whose sum is σ = 10272171355552. Its totient is φ = 9970048668492.

The previous prime is 10121110011959. The next prime is 10121110012067. The reversal of 10121110012021 is 12021001112101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10121110012021 - 2³⁵ = 10086750273653 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10121110011992 and 10121110012010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121110015021) 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 3 ways as a sum of consecutive naturals, for example, 75530671665 + ... + 75530671798.

It is an arithmetic number, because the mean of its divisors is an integer number (2568042838888).

Almost surely, 2^{10121110012021} is an apocalyptic number.

It is an amenable number.

10121110012021 is a deficient number, since it is larger than the sum of its proper divisors (151061343531).

10121110012021 is an equidigital number, since it uses as much as digits as its factorization.

10121110012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151061343530.

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

Adding to 10121110012021 its reverse (12021001112101), we get a palindrome (22142111124122).

The spelling of 10121110012021 in words is "ten trillion, one hundred twenty-one billion, one hundred ten million, twelve thousand, twenty-one".