10012111202021 has 6 divisors (see below), whose sum is σ = 10566798803622. Its totient is φ = 9485157980520.

The previous prime is 10012111201993. The next prime is 10012111202029. The reversal of 10012111202021 is 12020211121001.

It can be written as a sum of positive squares in only one way, i.e., 5473208781121 + 4538902420900 = 2339489^2 + 2130470^2 .

It is a de Polignac number, because none of the positive numbers 2^k-10012111202021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10012111201987 and 10012111202005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10012111202029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13867189670 + ... + 13867190391.

It is an arithmetic number, because the mean of its divisors is an integer number (1761133133937).

Almost surely, 2^{10012111202021} is an apocalyptic number.

It is an amenable number.

10012111202021 is a deficient number, since it is larger than the sum of its proper divisors (554687601601).

10012111202021 is an equidigital number, since it uses as much as digits as its factorization.

10012111202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27734380099 (or 27734380080 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 10012111202021 its reverse (12020211121001), we get a palindrome (22032322323022).

The spelling of 10012111202021 in words is "ten trillion, twelve billion, one hundred eleven million, two hundred two thousand, twenty-one".