22002012040 has 32 divisors (see below), whose sum is σ = 50711958360. Its totient is φ = 8586150400.

The previous prime is 22002012029. The next prime is 22002012041. The reversal of 22002012040 is 4021020022.

It can be written as a sum of positive squares in 4 ways, for example, as 11356312356 + 10645699684 = 106566^2 + 103178^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22002012040.

It is not an unprimeable number, because it can be changed into a prime (22002012041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6706291 + ... + 6709570.

Almost surely, 2^22002012040 is an apocalyptic number.

22002012040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22002012040 is an abundant number, since it is smaller than the sum of its proper divisors (28709946320).

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

22002012040 is a wasteful number, since it uses less digits than its factorization.

22002012040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13415913 (or 13415909 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 22002012040 its reverse (4021020022), we get a palindrome (26023032062).

The spelling of 22002012040 in words is "twenty-two billion, two million, twelve thousand, forty".