40122456220 has 96 divisors (see below), whose sum is σ = 105117626880. Its totient is φ = 12497399040.

The previous prime is 40122456181. The next prime is 40122456223. The reversal of 40122456220 is 2265422104.

40122456220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40122456220² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40122456223) 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, 2559366 + ... + 2574994.

It is an arithmetic number, because the mean of its divisors is an integer number (1094975280).

Almost surely, 2^40122456220 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 40122456220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52558813440).

40122456220 is an abundant number, since it is smaller than the sum of its proper divisors (64995170660).

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

40122456220 is a wasteful number, since it uses less digits than its factorization.

40122456220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17323 (or 17321 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 40122456220 its reverse (2265422104), we get a palindrome (42387878324).

The spelling of 40122456220 in words is "forty billion, one hundred twenty-two million, four hundred fifty-six thousand, two hundred twenty".