120212202211121 has 4 divisors (see below), whose sum is σ = 121315066451700. Its totient is φ = 119109337970544.

The previous prime is 120212202211063. The next prime is 120212202211159. The reversal of 120212202211121 is 121112202212021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 81234169000000 + 38978033211121 = 9013000^2 + 6243239^2 .

It is a cyclic number.

It is not a de Polignac number, because 120212202211121 - 2³⁰ = 120211128469297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120212202211093 and 120212202211102.

It is not an unprimeable number, because it can be changed into a prime (120212202211181) by changing a digit.

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, 551432120126 + ... + 551432120343.

It is an arithmetic number, because the mean of its divisors is an integer number (30328766612925).

Almost surely, 2^{120212202211121} is an apocalyptic number.

It is an amenable number.

120212202211121 is a deficient number, since it is larger than the sum of its proper divisors (1102864240579).

120212202211121 is a wasteful number, since it uses less digits than its factorization.

120212202211121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102864240578.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 120212202211121 its reverse (121112202212021), we get a palindrome (241324404423142).

The spelling of 120212202211121 in words is "one hundred twenty trillion, two hundred twelve billion, two hundred two million, two hundred eleven thousand, one hundred twenty-one".