220101100111220 has 24 divisors (see below), whose sum is σ = 462435709213800. Its totient is φ = 87997887857792.

The previous prime is 220101100111219. The next prime is 220101100111231. The reversal of 220101100111220 is 22111001101022.

It can be written as a sum of positive squares in 4 ways, for example, as 7903261503076 + 212197838608144 = 2811274^2 + 14567012^2 .

It is a junction number, because it is equal to n+sod(n) for n = 220101100111195 and 220101100111204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2659469255 + ... + 2659552014.

It is an arithmetic number, because the mean of its divisors is an integer number (19268154550575).

Almost surely, 2^{220101100111220} is an apocalyptic number.

220101100111220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220101100111220 is an abundant number, since it is smaller than the sum of its proper divisors (242334609102580).

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

220101100111220 is a wasteful number, since it uses less digits than its factorization.

220101100111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5319023347 (or 5319023345 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 220101100111220 its reverse (22111001101022), we get a palindrome (242212101212242).

The spelling of 220101100111220 in words is "two hundred twenty trillion, one hundred one billion, one hundred million, one hundred eleven thousand, two hundred twenty".