10112121121021 has 4 divisors (see below), whose sum is σ = 10144020557052. Its totient is φ = 10080221684992.

The previous prime is 10112121120979. The next prime is 10112121121079. The reversal of 10112121121021 is 12012112121101.

10112121121021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 4073478377796 + 6038642743225 = 2018286^2 + 2457365^2 .

It is a cyclic number.

It is not a de Polignac number, because 10112121121021 - 2¹⁹ = 10112120596733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10112121120986 and 10112121121004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10112121191021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15949717540 + ... + 15949718173.

It is an arithmetic number, because the mean of its divisors is an integer number (2536005139263).

Almost surely, 2^{10112121121021} is an apocalyptic number.

It is an amenable number.

10112121121021 is a deficient number, since it is larger than the sum of its proper divisors (31899436031).

10112121121021 is an equidigital number, since it uses as much as digits as its factorization.

10112121121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31899436030.

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

Adding to 10112121121021 its reverse (12012112121101), we get a palindrome (22124233242122).

The spelling of 10112121121021 in words is "ten trillion, one hundred twelve billion, one hundred twenty-one million, one hundred twenty-one thousand, twenty-one".