121110200100121 has 32 divisors (see below), whose sum is σ = 125780285030400. Its totient is φ = 116490069000000.

The previous prime is 121110200100107. The next prime is 121110200100139. The reversal of 121110200100121 is 121001002011121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121110200100121 - 2¹⁷ = 121110199969049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121110200100191) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7429609671 + ... + 7429625971.

It is an arithmetic number, because the mean of its divisors is an integer number (3930633907200).

Almost surely, 2^{121110200100121} is an apocalyptic number.

It is an amenable number.

121110200100121 is a deficient number, since it is larger than the sum of its proper divisors (4670084930279).

121110200100121 is a wasteful number, since it uses less digits than its factorization.

121110200100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18541.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 121110200100121 its reverse (121001002011121), we get a palindrome (242111202111242).

The spelling of 121110200100121 in words is "one hundred twenty-one trillion, one hundred ten billion, two hundred million, one hundred thousand, one hundred twenty-one".