220022120201220 has 60 divisors (see below), whose sum is σ = 690217540043724. Its totient is φ = 58672565386560.

The previous prime is 220022120201207. The next prime is 220022120201227. The reversal of 220022120201220 is 22102021220022.

220022120201220 is a `hidden beast` number, since 2 + 2 + 0 + 0 + 221 + 20 + 201 + 220 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 89781802806276 + 130240317394944 = 9475326^2 + 11412288^2 .

It is a tau number, because it is divible by the number of its divisors (60).

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 = 220022120201193 and 220022120201202.

It is not an unprimeable number, because it can be changed into a prime (220022120201227) 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 19 ways as a sum of consecutive naturals, for example, 67908060171 + ... + 67908063410.

Almost surely, 2^{220022120201220} is an apocalyptic number.

220022120201220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220022120201220 is an abundant number, since it is smaller than the sum of its proper divisors (470195419842504).

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

220022120201220 is a wasteful number, since it uses less digits than its factorization.

220022120201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135816123602 (or 135816123591 counting only the distinct ones).

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

Adding to 220022120201220 its reverse (22102021220022), we get a palindrome (242124141421242).

The spelling of 220022120201220 in words is "two hundred twenty trillion, twenty-two billion, one hundred twenty million, two hundred one thousand, two hundred twenty".