40400221122 has 24 divisors (see below), whose sum is σ = 90775806576. Its totient is φ = 13466740212.

The previous prime is 40400221097. The next prime is 40400221123. The reversal of 40400221122 is 22112200404.

40400221122 is a `hidden beast` number, since 40 + 400 + 221 + 1 + 2 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 40400221095 and 40400221104.

It is not an unprimeable number, because it can be changed into a prime (40400221123) 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, 41563528 + ... + 41564499.

It is an arithmetic number, because the mean of its divisors is an integer number (3782325274).

Almost surely, 2^40400221122 is an apocalyptic number.

40400221122 is an abundant number, since it is smaller than the sum of its proper divisors (50375585454).

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

40400221122 is an equidigital number, since it uses as much as digits as its factorization.

40400221122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83128044 (or 83128032 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 40400221122 its reverse (22112200404), we get a palindrome (62512421526).

The spelling of 40400221122 in words is "forty billion, four hundred million, two hundred twenty-one thousand, one hundred twenty-two".