10212112012021 has 4 divisors (see below), whose sum is σ = 10313222032044. Its totient is φ = 10111001992000.

The previous prime is 10212112011991. The next prime is 10212112012087. The reversal of 10212112012021 is 12021021121201.

10212112012021 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 8099118351025 + 2112993660996 = 2845895^2 + 1453614^2 .

It is a cyclic number.

It is not a de Polignac number, because 10212112012021 - 2¹³ = 10212112003829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10212112011986 and 10212112012004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212112016021) 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, 50555009860 + ... + 50555010061.

It is an arithmetic number, because the mean of its divisors is an integer number (2578305508011).

Almost surely, 2^{10212112012021} is an apocalyptic number.

It is an amenable number.

10212112012021 is a deficient number, since it is larger than the sum of its proper divisors (101110020023).

10212112012021 is a wasteful number, since it uses less digits than its factorization.

10212112012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101110020022.

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

Adding to 10212112012021 its reverse (12021021121201), we get a palindrome (22233133133222).

The spelling of 10212112012021 in words is "ten trillion, two hundred twelve billion, one hundred twelve million, twelve thousand, twenty-one".