121200311120121 has 12 divisors (see below), whose sum is σ = 175067213706580. Its totient is φ = 80800162346880.

The previous prime is 121200311120117. The next prime is 121200311120129. The reversal of 121200311120121 is 121021113002121.

It is a happy number.

121200311120121 is a `hidden beast` number, since 1 + 21 + 200 + 311 + 12 + 0 + 121 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 60467342405625 + 60732968714496 = 7776075^2 + 7793136^2 .

It is not a de Polignac number, because 121200311120121 - 2² = 121200311120117 is a prime.

It is a super-2 number, since 2×121200311120121² (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 = 121200311120094 and 121200311120103.

It is not an unprimeable number, because it can be changed into a prime (121200311120129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24337485 + ... + 28891413.

Almost surely, 2^{121200311120121} is an apocalyptic number.

It is an amenable number.

121200311120121 is a deficient number, since it is larger than the sum of its proper divisors (53866902586459).

121200311120121 is a wasteful number, since it uses less digits than its factorization.

121200311120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7511096 (or 7511093 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 121200311120121 its reverse (121021113002121), we get a palindrome (242221424122242).

The spelling of 121200311120121 in words is "one hundred twenty-one trillion, two hundred billion, three hundred eleven million, one hundred twenty thousand, one hundred twenty-one".