40221344121012 has 36 divisors (see below), whose sum is σ = 101744994982176. Its totient is φ = 13397306998800.

The previous prime is 40221344121001. The next prime is 40221344121017. The reversal of 40221344121012 is 21012144312204.

40221344121012 is a `hidden beast` number, since 4 + 0 + 2 + 2 + 1 + 3 + 441 + 210 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40221344121017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 408604614 + ... + 408703037.

It is an arithmetic number, because the mean of its divisors is an integer number (2826249860616).

Almost surely, 2^{40221344121012} is an apocalyptic number.

It is an amenable number.

40221344121012 is an abundant number, since it is smaller than the sum of its proper divisors (61523650861164).

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

40221344121012 is a wasteful number, since it uses less digits than its factorization.

40221344121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817309028 (or 817309023 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 40221344121012 its reverse (21012144312204), we get a palindrome (61233488433216).

The spelling of 40221344121012 in words is "forty trillion, two hundred twenty-one billion, three hundred forty-four million, one hundred twenty-one thousand, twelve".