2112033031021 has 4 divisors (see below), whose sum is σ = 2126207749500. Its totient is φ = 2097858312544.

The previous prime is 2112033031013. The next prime is 2112033031027. The reversal of 2112033031021 is 1201303302112.

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 349179355396 + 1762853675625 = 590914^2 + 1327725^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112033031021 - 2³ = 2112033031013 is a prime.

It is a super-3 number, since 3×2112033031021³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2112033031021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112033031027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7087359016 + ... + 7087359313.

It is an arithmetic number, because the mean of its divisors is an integer number (531551937375).

Almost surely, 2^{2112033031021} is an apocalyptic number.

It is an amenable number.

2112033031021 is a deficient number, since it is larger than the sum of its proper divisors (14174718479).

2112033031021 is a wasteful number, since it uses less digits than its factorization.

2112033031021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14174718478.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 2112033031021 its reverse (1201303302112), we get a palindrome (3313336333133).

The spelling of 2112033031021 in words is "two trillion, one hundred twelve billion, thirty-three million, thirty-one thousand, twenty-one".