10000012111021 has 4 divisors (see below), whose sum is σ = 10000110109500. Its totient is φ = 9999914112544.

The previous prime is 10000012111007. The next prime is 10000012111121. The reversal of 10000012111021 is 12011121000001.

10000012111021 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 2994938286921 + 7005073824100 = 1730589^2 + 2646710^2 .

It is a cyclic number.

It is not a de Polignac number, because 10000012111021 - 2⁹ = 10000012110509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10000012110989 and 10000012111007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10000012111121) 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, 48846016 + ... + 49050313.

It is an arithmetic number, because the mean of its divisors is an integer number (2500027527375).

Almost surely, 2^{10000012111021} is an apocalyptic number.

It is an amenable number.

10000012111021 is a deficient number, since it is larger than the sum of its proper divisors (97998479).

10000012111021 is an equidigital number, since it uses as much as digits as its factorization.

10000012111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97998478.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 10000012111021 its reverse (12011121000001), we get a palindrome (22011133111022).

The spelling of 10000012111021 in words is "ten trillion, twelve million, one hundred eleven thousand, twenty-one".