20121200110112 has 24 divisors (see below), whose sum is σ = 39613964683356. Its totient is φ = 10060510666752.

The previous prime is 20121200110027. The next prime is 20121200110139. The reversal of 20121200110112 is 21101100212102.

It can be written as a sum of positive squares in 2 ways, for example, as 18090016471696 + 2031183638416 = 4253236^2 + 1425196^2 .

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 3 ways as a sum of consecutive naturals, for example, 941288 + ... + 6413144.

Almost surely, 2^{20121200110112} is an apocalyptic number.

It is an amenable number.

20121200110112 is a deficient number, since it is larger than the sum of its proper divisors (19492764573244).

20121200110112 is a wasteful number, since it uses less digits than its factorization.

20121200110112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5586780 (or 5586772 counting only the distinct ones).

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

Adding to 20121200110112 its reverse (21101100212102), we get a palindrome (41222300322214).

The spelling of 20121200110112 in words is "twenty trillion, one hundred twenty-one billion, two hundred million, one hundred ten thousand, one hundred twelve".