40121044212 has 24 divisors (see below), whose sum is σ = 93684592512. Its totient is φ = 13363849600.

The previous prime is 40121044199. The next prime is 40121044213. The reversal of 40121044212 is 21244012104.

It is a super-2 number, since 2×40121044212² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40121044213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1211964 + ... + 1244627.

It is an arithmetic number, because the mean of its divisors is an integer number (3903524688).

Almost surely, 2^40121044212 is an apocalyptic number.

It is an amenable number.

40121044212 is an abundant number, since it is smaller than the sum of its proper divisors (53563548300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40121044212 is a wasteful number, since it uses less digits than its factorization.

40121044212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2457959 (or 2457957 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 40121044212 its reverse (21244012104), we get a palindrome (61365056316).

The spelling of 40121044212 in words is "forty billion, one hundred twenty-one million, forty-four thousand, two hundred twelve".