220011012211220 has 24 divisors (see below), whose sum is σ = 462217498114344. Its totient is φ = 87967381556736.

The previous prime is 220011012211183. The next prime is 220011012211247. The reversal of 220011012211220 is 22112210110022.

It can be written as a sum of positive squares in 4 ways, for example, as 18620968300804 + 201390043910416 = 4315202^2 + 14191196^2 .

It is a congruent number.

It is an unprimeable number.

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, 2313909257 + ... + 2314004336.

It is an arithmetic number, because the mean of its divisors is an integer number (19259062421431).

Almost surely, 2^{220011012211220} is an apocalyptic number.

220011012211220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220011012211220 is an abundant number, since it is smaller than the sum of its proper divisors (242206485903124).

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

220011012211220 is a wasteful number, since it uses less digits than its factorization.

220011012211220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4627915979 (or 4627915977 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 220011012211220 its reverse (22112210110022), we get a palindrome (242123222321242).

The spelling of 220011012211220 in words is "two hundred twenty trillion, eleven billion, twelve million, two hundred eleven thousand, two hundred twenty".