220221021101220 has 96 divisors (see below), whose sum is σ = 685144621069440. Its totient is φ = 58724529448320.

The previous prime is 220221021101219. The next prime is 220221021101227. The reversal of 220221021101220 is 22101120122022.

It is a happy number.

220221021101220 is a `hidden beast` number, since 2 + 20 + 2 + 210 + 211 + 0 + 1 + 220 = 666.

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 = 220221021101193 and 220221021101202.

It is not an unprimeable number, because it can be changed into a prime (220221021101227) 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, 25976175 + ... + 33394665.

It is an arithmetic number, because the mean of its divisors is an integer number (7136923136140).

Almost surely, 2^{220221021101220} is an apocalyptic number.

220221021101220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220221021101220 is an abundant number, since it is smaller than the sum of its proper divisors (464923599968220).

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

220221021101220 is a wasteful number, since it uses less digits than its factorization.

220221021101220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7473482 (or 7473474 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 220221021101220 its reverse (22101120122022), we get a palindrome (242322141223242).

The spelling of 220221021101220 in words is "two hundred twenty trillion, two hundred twenty-one billion, twenty-one million, one hundred one thousand, two hundred twenty".