20101220110112 has 36 divisors (see below), whose sum is σ = 41369707467270. Its totient is φ = 9613627001088.

The previous prime is 20101220110109. The next prime is 20101220110159. The reversal of 20101220110112 is 21101102210102.

It can be written as a sum of positive squares in only one way, i.e., 13449793420816 + 6651426689296 = 3667396^2 + 2579036^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 593710037 + ... + 593743892.

Almost surely, 2^{20101220110112} is an apocalyptic number.

It is an amenable number.

20101220110112 is an abundant number, since it is smaller than the sum of its proper divisors (21268487357158).

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

20101220110112 is a wasteful number, since it uses less digits than its factorization.

20101220110112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1187453985 (or 1187453954 counting only the distinct ones).

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

Adding to 20101220110112 its reverse (21101102210102), we get a palindrome (41202322320214).

The spelling of 20101220110112 in words is "twenty trillion, one hundred one billion, two hundred twenty million, one hundred ten thousand, one hundred twelve".