1022121111005 has 8 divisors (see below), whose sum is σ = 1227069288024. Its totient is φ = 817347585600.

The previous prime is 1022121110981. The next prime is 1022121111013. The reversal of 1022121111005 is 5001111212201.

It can be written as a sum of positive squares in 4 ways, for example, as 97006085764 + 925115025241 = 311458^2 + 961829^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1022121111005 - 2¹⁰ = 1022121109981 is a prime.

It is a super-2 number, since 2×1022121111005² (a number of 25 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 43650026 + ... + 43673435.

It is an arithmetic number, because the mean of its divisors is an integer number (153383661003).

Almost surely, 2^{1022121111005} is an apocalyptic number.

It is an amenable number.

1022121111005 is a deficient number, since it is larger than the sum of its proper divisors (204948177019).

1022121111005 is an equidigital number, since it uses as much as digits as its factorization.

1022121111005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87325807.

The product of its (nonzero) digits is 40, while the sum is 17.

Adding to 1022121111005 its reverse (5001111212201), we get a palindrome (6023232323206).

The spelling of 1022121111005 in words is "one trillion, twenty-two billion, one hundred twenty-one million, one hundred eleven thousand, five".