10020111021205 has 32 divisors (see below), whose sum is σ = 13069687302144. Its totient is φ = 7345771954176.

The previous prime is 10020111021191. The next prime is 10020111021209. The reversal of 10020111021205 is 50212011102001.

10020111021205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 10020111021205 - 2¹³ = 10020111013013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10020111021209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5726797 + ... + 7268866.

It is an arithmetic number, because the mean of its divisors is an integer number (408427728192).

Almost surely, 2^{10020111021205} is an apocalyptic number.

It is an amenable number.

10020111021205 is a deficient number, since it is larger than the sum of its proper divisors (3049576280939).

10020111021205 is a wasteful number, since it uses less digits than its factorization.

10020111021205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12995925.

The product of its (nonzero) digits is 40, while the sum is 16.

Adding to 10020111021205 its reverse (50212011102001), we get a palindrome (60232122123206).

The spelling of 10020111021205 in words is "ten trillion, twenty billion, one hundred eleven million, twenty-one thousand, two hundred five".