40221204144212 has 96 divisors (see below), whose sum is σ = 87031100104704. Its totient is φ = 15838147440000.

The previous prime is 40221204144211. The next prime is 40221204144223. The reversal of 40221204144212 is 21244140212204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40221204144211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 143392733 + ... + 143672955.

It is an arithmetic number, because the mean of its divisors is an integer number (906573959424).

Almost surely, 2^{40221204144212} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40221204144212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43515550052352).

40221204144212 is an abundant number, since it is smaller than the sum of its proper divisors (46809895960492).

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

40221204144212 is a wasteful number, since it uses less digits than its factorization.

40221204144212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282069 (or 282067 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 29.

Adding to 40221204144212 its reverse (21244140212204), we get a palindrome (61465344356416).

The spelling of 40221204144212 in words is "forty trillion, two hundred twenty-one billion, two hundred four million, one hundred forty-four thousand, two hundred twelve".