40223121104 has 40 divisors (see below), whose sum is σ = 80850945000. Its totient is φ = 19362341376.

The previous prime is 40223121101. The next prime is 40223121131. The reversal of 40223121104 is 40112132204.

It can be written as a sum of positive squares in 4 ways, for example, as 20807485504 + 19415635600 = 144248^2 + 139340^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40223121101) 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 7 ways as a sum of consecutive naturals, for example, 37742 + ... + 286130.

It is an arithmetic number, because the mean of its divisors is an integer number (2021273625).

Almost surely, 2^40223121104 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 40223121104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40425472500).

40223121104 is an abundant number, since it is smaller than the sum of its proper divisors (40627823896).

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

40223121104 is a wasteful number, since it uses less digits than its factorization.

40223121104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248775 (or 248769 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 40223121104 its reverse (40112132204), we get a palindrome (80335253308).

The spelling of 40223121104 in words is "forty billion, two hundred twenty-three million, one hundred twenty-one thousand, one hundred four".