220102021220 has 12 divisors (see below), whose sum is σ = 462214244604. Its totient is φ = 88040808480.

The previous prime is 220102021211. The next prime is 220102021241. The reversal of 220102021220 is 22120201022.

It can be written as a sum of positive squares in 2 ways, for example, as 44005970176 + 176096051044 = 209776^2 + 419638^2 .

It is a junction number, because it is equal to n+sod(n) for n = 220102021195 and 220102021204.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5502550511 + ... + 5502550550.

It is an arithmetic number, because the mean of its divisors is an integer number (38517853717).

Almost surely, 2^220102021220 is an apocalyptic number.

220102021220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220102021220 is an abundant number, since it is smaller than the sum of its proper divisors (242112223384).

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

220102021220 is a wasteful number, since it uses less digits than its factorization.

220102021220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11005101070 (or 11005101068 counting only the distinct ones).

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

Adding to 220102021220 its reverse (22120201022), we get a palindrome (242222222242).

The spelling of 220102021220 in words is "two hundred twenty billion, one hundred two million, twenty-one thousand, two hundred twenty".