20110010101220 has 96 divisors (see below), whose sum is σ = 49815341301600. Its totient is φ = 6747474714624.

The previous prime is 20110010101217. The next prime is 20110010101267. The reversal of 20110010101220 is 2210101001102.

It can be written as a sum of positive squares in 16 ways, for example, as 6746247801316 + 13363762299904 = 2597354^2 + 3655648^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78316235 + ... + 78572594.

It is an arithmetic number, because the mean of its divisors is an integer number (518909805225).

Almost surely, 2^{20110010101220} is an apocalyptic number.

20110010101220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20110010101220 is an abundant number, since it is smaller than the sum of its proper divisors (29705331200380).

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

20110010101220 is a wasteful number, since it uses less digits than its factorization.

20110010101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156888897 (or 156888895 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20110010101220 its reverse (2210101001102), we get a palindrome (22320111102322).

The spelling of 20110010101220 in words is "twenty trillion, one hundred ten billion, ten million, one hundred one thousand, two hundred twenty".