22120202220020 has 12 divisors (see below), whose sum is σ = 46452424662084. Its totient is φ = 8848080888000.

The previous prime is 22120202220019. The next prime is 22120202220023. The reversal of 22120202220020 is 2002220202122.

It can be written as a sum of positive squares in 2 ways, for example, as 14666111892496 + 7454090327524 = 3829636^2 + 2730218^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120202220023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553005055481 + ... + 553005055520.

It is an arithmetic number, because the mean of its divisors is an integer number (3871035388507).

Almost surely, 2^{22120202220020} is an apocalyptic number.

22120202220020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22120202220020 is an abundant number, since it is smaller than the sum of its proper divisors (24332222442064).

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

22120202220020 is a wasteful number, since it uses less digits than its factorization.

22120202220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106010111010 (or 1106010111008 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 22120202220020 its reverse (2002220202122), we get a palindrome (24122422422142).

The spelling of 22120202220020 in words is "twenty-two trillion, one hundred twenty billion, two hundred two million, two hundred twenty thousand, twenty".