40221232212 has 96 divisors (see below), whose sum is σ = 113611196160. Its totient is φ = 10811473920.

The previous prime is 40221232187. The next prime is 40221232213. The reversal of 40221232212 is 21223212204.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40221232213) 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 31 ways as a sum of consecutive naturals, for example, 5366964 + ... + 5374452.

It is an arithmetic number, because the mean of its divisors is an integer number (1183449960).

Almost surely, 2^40221232212 is an apocalyptic number.

40221232212 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40221232212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56805598080).

40221232212 is an abundant number, since it is smaller than the sum of its proper divisors (73389963948).

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

40221232212 is a wasteful number, since it uses less digits than its factorization.

40221232212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11281 (or 11279 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 40221232212 its reverse (21223212204), we get a palindrome (61444444416).

The spelling of 40221232212 in words is "forty billion, two hundred twenty-one million, two hundred thirty-two thousand, two hundred twelve".