2021021122112 has 28 divisors (see below), whose sum is σ = 4015421202060. Its totient is φ = 1009261449216.

The previous prime is 2021021122069. The next prime is 2021021122181. The reversal of 2021021122112 is 2112211201202.

It can be written as a sum of positive squares in 2 ways, for example, as 1174223635456 + 846797486656 = 1083616^2 + 920216^2 .

It is an unprimeable number.

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, 19465193 + ... + 19568744.

Almost surely, 2^{2021021122112} is an apocalyptic number.

It is an amenable number.

2021021122112 is a deficient number, since it is larger than the sum of its proper divisors (1994400079948).

2021021122112 is an equidigital number, since it uses as much as digits as its factorization.

2021021122112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39034758 (or 39034748 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2021021122112 its reverse (2112211201202), we get a palindrome (4133232323314).

The spelling of 2021021122112 in words is "two trillion, twenty-one billion, twenty-one million, one hundred twenty-two thousand, one hundred twelve".