20220220221984 has 72 divisors (see below), whose sum is σ = 59055339159180. Its totient is φ = 6557909257728.

The previous prime is 20220220221911. The next prime is 20220220221989. The reversal of 20220220221984 is 48912202202202.

It is a happy number.

20220220221984 is a `hidden beast` number, since 2 + 0 + 220 + 220 + 22 + 198 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20175009555600 + 45210666384 = 4491660^2 + 212628^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (20220220221989) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 948760939 + ... + 948782250.

Almost surely, 2^{20220220221984} is an apocalyptic number.

20220220221984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20220220221984 is an abundant number, since it is smaller than the sum of its proper divisors (38835118937196).

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

20220220221984 is a wasteful number, since it uses less digits than its factorization.

20220220221984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1897543242 (or 1897543231 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The spelling of 20220220221984 in words is "twenty trillion, two hundred twenty billion, two hundred twenty million, two hundred twenty-one thousand, nine hundred eighty-four".