40022220012 has 96 divisors (see below), whose sum is σ = 101086755840. Its totient is φ = 12276126720.

The previous prime is 40022220011. The next prime is 40022220047. The reversal of 40022220012 is 21002222004.

It is a junction number, because it is equal to n+sod(n) for n = 40022219973 and 40022220000.

It is not an unprimeable number, because it can be changed into a prime (40022220011) 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, 13987462 + ... + 13990322.

It is an arithmetic number, because the mean of its divisors is an integer number (1052987040).

Almost surely, 2^40022220012 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 40022220012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50543377920).

40022220012 is an abundant number, since it is smaller than the sum of its proper divisors (61064535828).

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

40022220012 is a wasteful number, since it uses less digits than its factorization.

40022220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4391 (or 4389 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 40022220012 its reverse (21002222004), we get a palindrome (61024442016).

The spelling of 40022220012 in words is "forty billion, twenty-two million, two hundred twenty thousand, twelve".