2112221213033 has 4 divisors (see below), whose sum is σ = 2236469519700. Its totient is φ = 1987972906368.

The previous prime is 2112221213029. The next prime is 2112221213041. The reversal of 2112221213033 is 3303121222112.

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 1511591563024 + 600629650009 = 1229468^2 + 775003^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112221213033 - 2² = 2112221213029 is a prime.

It is a super-2 number, since 2×2112221213033² (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 (2112221213093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62124153308 + ... + 62124153341.

It is an arithmetic number, because the mean of its divisors is an integer number (559117379925).

Almost surely, 2^{2112221213033} is an apocalyptic number.

It is an amenable number.

2112221213033 is a deficient number, since it is larger than the sum of its proper divisors (124248306667).

2112221213033 is a wasteful number, since it uses less digits than its factorization.

2112221213033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124248306666.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 2112221213033 its reverse (3303121222112), we get a palindrome (5415342435145).

The spelling of 2112221213033 in words is "two trillion, one hundred twelve billion, two hundred twenty-one million, two hundred thirteen thousand, thirty-three".