121010210102121 has 8 divisors (see below), whose sum is σ = 161358472464000. Its totient is φ = 80667710570832.

The previous prime is 121010210102099. The next prime is 121010210102203. The reversal of 121010210102121 is 121201012010121.

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 121010210102121 - 2³¹ = 121008062618473 is a prime.

It is a super-3 number, since 3×121010210102121³ (a number of 43 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121010210102121.

It is not an unprimeable number, because it can be changed into a prime (121010210102021) 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, 1440658650 + ... + 1440742643.

It is an arithmetic number, because the mean of its divisors is an integer number (20169809058000).

Almost surely, 2^{121010210102121} is an apocalyptic number.

It is an amenable number.

121010210102121 is a deficient number, since it is larger than the sum of its proper divisors (40348262361879).

121010210102121 is a wasteful number, since it uses less digits than its factorization.

121010210102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2881415295.

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

Adding to 121010210102121 its reverse (121201012010121), we get a palindrome (242211222112242).

The spelling of 121010210102121 in words is "one hundred twenty-one trillion, ten billion, two hundred ten million, one hundred two thousand, one hundred twenty-one".