121210002011121 has 8 divisors (see below), whose sum is σ = 170119301068320. Its totient is φ = 76553685480672.

The previous prime is 121210002011093. The next prime is 121210002011123. The reversal of 121210002011121 is 121110200012121.

It is a happy number.

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

It is not a de Polignac number, because 121210002011121 - 2⁹ = 121210002010609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121210002011121.

It is not an unprimeable number, because it can be changed into a prime (121210002011123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1063245631620 + ... + 1063245631733.

It is an arithmetic number, because the mean of its divisors is an integer number (21264912633540).

Almost surely, 2^{121210002011121} is an apocalyptic number.

It is an amenable number.

121210002011121 is a deficient number, since it is larger than the sum of its proper divisors (48909299057199).

121210002011121 is a wasteful number, since it uses less digits than its factorization.

121210002011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2126491263375.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121210002011121 its reverse (121110200012121), we get a palindrome (242320202023242).

The spelling of 121210002011121 in words is "one hundred twenty-one trillion, two hundred ten billion, two million, eleven thousand, one hundred twenty-one".