20222002221220 has 96 divisors (see below), whose sum is σ = 45081139057920. Its totient is φ = 7598182809600.

The previous prime is 20222002221193. The next prime is 20222002221227. The reversal of 20222002221220 is 2212220022202.

It is a super-2 number, since 2×20222002221220² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (20222002221227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25050132 + ... + 25844788.

It is an arithmetic number, because the mean of its divisors is an integer number (469595198520).

Almost surely, 2^{20222002221220} is an apocalyptic number.

20222002221220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20222002221220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22540569528960).

20222002221220 is an abundant number, since it is smaller than the sum of its proper divisors (24859136836700).

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

20222002221220 is a wasteful number, since it uses less digits than its factorization.

20222002221220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795253 (or 795251 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 20222002221220 its reverse (2212220022202), we get a palindrome (22434222243422).

The spelling of 20222002221220 in words is "twenty trillion, two hundred twenty-two billion, two million, two hundred twenty-one thousand, two hundred twenty".