20022220078720 has 32 divisors (see below), whose sum is σ = 47865619877220. Its totient is φ = 8008888031232.

The previous prime is 20022220078717. The next prime is 20022220078723. The reversal of 20022220078720 is 2787002222002.

It is an interprime number because it is at equal distance from previous prime (20022220078717) and next prime (20022220078723).

It can be written as a sum of positive squares in 2 ways, for example, as 19935939241024 + 86280837696 = 4464968^2 + 293736^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (20022220078723) 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 3 ways as a sum of consecutive naturals, for example, 15642358797 + ... + 15642360076.

Almost surely, 2^{20022220078720} is an apocalyptic number.

20022220078720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20022220078720 is an abundant number, since it is smaller than the sum of its proper divisors (27843399798500).

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

20022220078720 is an equidigital number, since it uses as much as digits as its factorization.

20022220078720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31284718892 (or 31284718880 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 34.

The spelling of 20022220078720 in words is "twenty trillion, twenty-two billion, two hundred twenty million, seventy-eight thousand, seven hundred twenty".