121121010210121 has 8 divisors (see below), whose sum is σ = 127523390835200. Its totient is φ = 114721388646480.

The previous prime is 121121010210023. The next prime is 121121010210139. The reversal of 121121010210121 is 121012010121121.

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 121121010210121 - 2¹³ = 121121010201929 is a prime.

It is a super-3 number, since 3×121121010210121³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121121010210095 and 121121010210104.

It is not an unprimeable number, because it can be changed into a prime (121121010210191) 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, 689675241 + ... + 689850838.

It is an arithmetic number, because the mean of its divisors is an integer number (15940423854400).

Almost surely, 2^{121121010210121} is an apocalyptic number.

It is an amenable number.

121121010210121 is a deficient number, since it is larger than the sum of its proper divisors (6402380625079).

121121010210121 is a wasteful number, since it uses less digits than its factorization.

121121010210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379530719.

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

Adding to 121121010210121 its reverse (121012010121121), we get a palindrome (242133020331242).

The spelling of 121121010210121 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, ten million, two hundred ten thousand, one hundred twenty-one".