1022021112005 has 4 divisors (see below), whose sum is σ = 1226425334412. Its totient is φ = 817616889600.

The previous prime is 1022021111953. The next prime is 1022021112043. The reversal of 1022021112005 is 5002111202201.

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 750065119969 + 271955992036 = 866063^2 + 521494^2 .

It is not a de Polignac number, because 1022021112005 - 2¹² = 1022021107909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102202111196 + ... + 102202111205.

It is an arithmetic number, because the mean of its divisors is an integer number (306606333603).

Almost surely, 2^{1022021112005} is an apocalyptic number.

It is an amenable number.

1022021112005 is a deficient number, since it is larger than the sum of its proper divisors (204404222407).

1022021112005 is an equidigital number, since it uses as much as digits as its factorization.

1022021112005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204404222406.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 1022021112005 its reverse (5002111202201), we get a palindrome (6024132314206).

The spelling of 1022021112005 in words is "one trillion, twenty-two billion, twenty-one million, one hundred twelve thousand, five".