22120220020 has 24 divisors (see below), whose sum is σ = 46791536904. Its totient is φ = 8783502336.

The previous prime is 22120220011. The next prime is 22120220029. The reversal of 22120220020 is 2002202122.

It is an interprime number because it is at equal distance from previous prime (22120220011) and next prime (22120220029).

It can be written as a sum of positive squares in 4 ways, for example, as 3771364 + 22116448656 = 1942^2 + 148716^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120220029) 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, 4033797 + ... + 4039276.

It is an arithmetic number, because the mean of its divisors is an integer number (1949647371).

Almost surely, 2^22120220020 is an apocalyptic number.

22120220020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22120220020 is an abundant number, since it is smaller than the sum of its proper divisors (24671316884).

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

22120220020 is a wasteful number, since it uses less digits than its factorization.

22120220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8073219 (or 8073217 counting only the distinct ones).

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

Adding to 22120220020 its reverse (2002202122), we get a palindrome (24122422142).

The spelling of 22120220020 in words is "twenty-two billion, one hundred twenty million, two hundred twenty thousand, twenty".