220220022211220 has 24 divisors (see below), whose sum is σ = 462466011357000. Its totient is φ = 88087253700992.

The previous prime is 220220022211213. The next prime is 220220022211229. The reversal of 220220022211220 is 22112220022022.

It can be written as a sum of positive squares in 4 ways, for example, as 33716533880836 + 186503488330384 = 5806594^2 + 13656628^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 220220022211192 and 220220022211201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220220022211229) 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 7 ways as a sum of consecutive naturals, for example, 44804795 + ... + 49476354.

It is an arithmetic number, because the mean of its divisors is an integer number (19269417139875).

Almost surely, 2^{220220022211220} is an apocalyptic number.

220220022211220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220220022211220 is an abundant number, since it is smaller than the sum of its proper divisors (242245989145780).

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

220220022211220 is a wasteful number, since it uses less digits than its factorization.

220220022211220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94397947 (or 94397945 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 220220022211220 its reverse (22112220022022), we get a palindrome (242332242233242).

The spelling of 220220022211220 in words is "two hundred twenty trillion, two hundred twenty billion, twenty-two million, two hundred eleven thousand, two hundred twenty".