202220121110220 has 144 divisors (see below), whose sum is σ = 617182390712160. Its totient is φ = 53592958153728.

The previous prime is 202220121110201. The next prime is 202220121110237. The reversal of 202220121110220 is 22011121022202.

It is a happy number.

202220121110220 is a `hidden beast` number, since 2 + 0 + 2 + 220 + 1 + 211 + 10 + 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 = 202220121110193 and 202220121110202.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1266733366 + ... + 1266892994.

It is an arithmetic number, because the mean of its divisors is an integer number (4285988824390).

Almost surely, 2^{202220121110220} is an apocalyptic number.

202220121110220 is a gapful number since it is divisible by the number (20) 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 202220121110220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308591195356080).

202220121110220 is an abundant number, since it is smaller than the sum of its proper divisors (414962269601940).

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

202220121110220 is a wasteful number, since it uses less digits than its factorization.

202220121110220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202984 (or 202979 counting only the distinct ones).

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

Adding to 202220121110220 its reverse (22011121022202), we get a palindrome (224231242132422).

The spelling of 202220121110220 in words is "two hundred two trillion, two hundred twenty billion, one hundred twenty-one million, one hundred ten thousand, two hundred twenty".