121000200012121 has 8 divisors (see below), whose sum is σ = 122247981422280. Its totient is φ = 119752425881088.

The previous prime is 121000200012073. The next prime is 121000200012149. The reversal of 121000200012121 is 121210002000121.

It can be written as a sum of positive squares in 4 ways, for example, as 42988203658521 + 78011996353600 = 6556539^2 + 8832440^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121000200012121 - 2³³ = 120991610077529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121000200012721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35529495 + ... + 38785891.

It is an arithmetic number, because the mean of its divisors is an integer number (15280997677785).

Almost surely, 2^{121000200012121} is an apocalyptic number.

It is an amenable number.

121000200012121 is a deficient number, since it is larger than the sum of its proper divisors (1247781410159).

121000200012121 is an equidigital number, since it uses as much as digits as its factorization.

121000200012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3639563.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121000200012121 its reverse (121210002000121), we get a palindrome (242210202012242).

The spelling of 121000200012121 in words is "one hundred twenty-one trillion, two hundred million, twelve thousand, one hundred twenty-one".