1020112221205 has 16 divisors (see below), whose sum is σ = 1526193869184. Its totient is φ = 635914111680.

The previous prime is 1020112221179. The next prime is 1020112221209. The reversal of 1020112221205 is 5021222110201.

It is a happy number.

1020112221205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1020112221205 - 2²³ = 1020103832597 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 (1020112221209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1324820682 + ... + 1324821451.

It is an arithmetic number, because the mean of its divisors is an integer number (95387116824).

Almost surely, 2^{1020112221205} is an apocalyptic number.

It is an amenable number.

1020112221205 is a deficient number, since it is larger than the sum of its proper divisors (506081647979).

1020112221205 is a wasteful number, since it uses less digits than its factorization.

1020112221205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2649642156.

The product of its (nonzero) digits is 160, while the sum is 19.

Adding to 1020112221205 its reverse (5021222110201), we get a palindrome (6041334331406).

The spelling of 1020112221205 in words is "one trillion, twenty billion, one hundred twelve million, two hundred twenty-one thousand, two hundred five".