40112011221221 has 4 divisors (see below), whose sum is σ = 40210084598700. Its totient is φ = 40013937843744.

The previous prime is 40112011221197. The next prime is 40112011221239. The reversal of 40112011221221 is 12212211021104.

40112011221221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 32851066612225 + 7260944608996 = 5731585^2 + 2694614^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40112011221221 is a prime.

It is a super-2 number, since 2×40112011221221² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40112011221193 and 40112011221202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40112014221221) 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, 49036688126 + ... + 49036688943.

It is an arithmetic number, because the mean of its divisors is an integer number (10052521149675).

Almost surely, 2^{40112011221221} is an apocalyptic number.

It is an amenable number.

40112011221221 is a deficient number, since it is larger than the sum of its proper divisors (98073377479).

40112011221221 is an equidigital number, since it uses as much as digits as its factorization.

40112011221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98073377478.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 40112011221221 its reverse (12212211021104), we get a palindrome (52324222242325).

The spelling of 40112011221221 in words is "forty trillion, one hundred twelve billion, eleven million, two hundred twenty-one thousand, two hundred twenty-one".