20222012021220 has 72 divisors (see below), whose sum is σ = 61409729155320. Its totient is φ = 5386415569920.

The previous prime is 20222012021213. The next prime is 20222012021227. The reversal of 20222012021220 is 2212021022202.

20222012021220 is a `hidden beast` number, since 20 + 2 + 220 + 1 + 202 + 1 + 220 = 666.

It is an interprime number because it is at equal distance from previous prime (20222012021213) and next prime (20222012021227).

It can be written as a sum of positive squares in 4 ways, for example, as 213155809344 + 20008856211876 = 461688^2 + 4473126^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20222012021193 and 20222012021202.

It is not an unprimeable number, because it can be changed into a prime (20222012021227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63601075 + ... + 63918234.

It is an arithmetic number, because the mean of its divisors is an integer number (852912904935).

Almost surely, 2^{20222012021220} is an apocalyptic number.

20222012021220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20222012021220 is an abundant number, since it is smaller than the sum of its proper divisors (41187717134100).

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

20222012021220 is a wasteful number, since it uses less digits than its factorization.

20222012021220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127520205 (or 127520200 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 20222012021220 its reverse (2212021022202), we get a palindrome (22434033043422).

The spelling of 20222012021220 in words is "twenty trillion, two hundred twenty-two billion, twelve million, twenty-one thousand, two hundred twenty".