121001020000121 has 4 divisors (see below), whose sum is σ = 121001097972852. Its totient is φ = 121000942027392.

The previous prime is 121001020000087. The next prime is 121001020000153. The reversal of 121001020000121 is 121000020100121.

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 72667782211600 + 48333237788521 = 8524540^2 + 6952211^2 .

It is a cyclic number.

It is not a de Polignac number, because 121001020000121 - 2⁶ = 121001020000057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121001020200121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36610340 + ... + 39778373.

It is an arithmetic number, because the mean of its divisors is an integer number (30250274493213).

Almost surely, 2^{121001020000121} is an apocalyptic number.

It is an amenable number.

121001020000121 is a deficient number, since it is larger than the sum of its proper divisors (77972731).

121001020000121 is an equidigital number, since it uses as much as digits as its factorization.

121001020000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77972730.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121001020000121 its reverse (121000020100121), we get a palindrome (242001040100242).

The spelling of 121001020000121 in words is "one hundred twenty-one trillion, one billion, twenty million, one hundred twenty-one", and thus it is an aban number.