1220220010220 has 96 divisors (see below), whose sum is σ = 2794683741696. Its totient is φ = 445721472000.

The previous prime is 1220220010199. The next prime is 1220220010297. The reversal of 1220220010220 is 220100220221.

It is a junction number, because it is equal to n+sod(n) for n = 1220220010195 and 1220220010204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1931255 + ... + 2483985.

It is an arithmetic number, because the mean of its divisors is an integer number (29111288976).

Almost surely, 2^{1220220010220} is an apocalyptic number.

1220220010220 is a gapful number since it is divisible by the number (10) 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 1220220010220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1397341870848).

1220220010220 is an abundant number, since it is smaller than the sum of its proper divisors (1574463731476).

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

1220220010220 is a wasteful number, since it uses less digits than its factorization.

1220220010220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552951 (or 552949 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 1220220010220 its reverse (220100220221), we get a palindrome (1440320230441).

The spelling of 1220220010220 in words is "one trillion, two hundred twenty billion, two hundred twenty million, ten thousand, two hundred twenty".