120211201112121 has 24 divisors (see below), whose sum is σ = 198479029608704. Its totient is φ = 68679950362560.

The previous prime is 120211201112099. The next prime is 120211201112143. The reversal of 120211201112121 is 121211102112021.

It is a happy number.

120211201112121 is a `hidden beast` number, since 1 + 20 + 211 + 201 + 112 + 121 = 666.

It is an interprime number because it is at equal distance from previous prime (120211201112099) and next prime (120211201112143).

It is not a de Polignac number, because 120211201112121 - 2¹⁴ = 120211201095737 is a prime.

It is a super-2 number, since 2×120211201112121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120211201112094 and 120211201112103.

It is not an unprimeable number, because it can be changed into a prime (120211201113121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 168593620 + ... + 169305141.

Almost surely, 2^{120211201112121} is an apocalyptic number.

It is an amenable number.

120211201112121 is a deficient number, since it is larger than the sum of its proper divisors (78267828496583).

120211201112121 is a wasteful number, since it uses less digits than its factorization.

120211201112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337904421 (or 337904418 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 120211201112121 its reverse (121211102112021), we get a palindrome (241422303224142).

The spelling of 120211201112121 in words is "one hundred twenty trillion, two hundred eleven billion, two hundred one million, one hundred twelve thousand, one hundred twenty-one".