121200001212112 has 20 divisors (see below), whose sum is σ = 234826583385636. Its totient is φ = 60599592596480.

The previous prime is 121200001212091. The next prime is 121200001212211. The reversal of 121200001212112 is 211212100002121.

It can be written as a sum of positive squares in 2 ways, for example, as 92488150789776 + 28711850422336 = 9617076^2 + 5358344^2 .

It is a super-3 number, since 3×121200001212112³ (a number of 43 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23042743 + ... + 27809494.

Almost surely, 2^{121200001212112} is an apocalyptic number.

It is an amenable number.

121200001212112 is a deficient number, since it is larger than the sum of its proper divisors (113626582173524).

121200001212112 is a wasteful number, since it uses less digits than its factorization.

121200001212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51001206 (or 51001200 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121200001212112 its reverse (211212100002121), we get a palindrome (332412101214233).

The spelling of 121200001212112 in words is "one hundred twenty-one trillion, two hundred billion, one million, two hundred twelve thousand, one hundred twelve".