2112222001001 has 6 divisors (see below), whose sum is σ = 2457074572650. Its totient is φ = 1810476000816.

The previous prime is 2112222000989. The next prime is 2112222001003. The reversal of 2112222001001 is 1001002222112.

It can be written as a sum of positive squares in only one way, i.e., 1771358693776 + 340863307225 = 1330924^2 + 583835^2 .

It is not a de Polignac number, because 2112222001001 - 2¹⁰ = 2112221999977 is a prime.

It is a super-2 number, since 2×2112222001001² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2112222001003) 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, 21553285676 + ... + 21553285773.

It is an arithmetic number, because the mean of its divisors is an integer number (409512428775).

Almost surely, 2^{2112222001001} is an apocalyptic number.

It is an amenable number.

2112222001001 is a deficient number, since it is larger than the sum of its proper divisors (344852571649).

2112222001001 is an equidigital number, since it uses as much as digits as its factorization.

2112222001001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43106571463 (or 43106571456 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2112222001001 its reverse (1001002222112), we get a palindrome (3113224223113).

The spelling of 2112222001001 in words is "two trillion, one hundred twelve billion, two hundred twenty-two million, one thousand, one".