121102112210121 has 192 divisors, whose sum is σ = 216050192117760. Its totient is φ = 63861827673600.

The previous prime is 121102112210117. The next prime is 121102112210129. The reversal of 121102112210121 is 121012211201121.

It is a happy number.

121102112210121 is a `hidden beast` number, since 1 + 2 + 110 + 211 + 221 + 0 + 121 = 666.

It is not a de Polignac number, because 121102112210121 - 2² = 121102112210117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121102112210094 and 121102112210103.

It is not an unprimeable number, because it can be changed into a prime (121102112210129) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 6356723046 + ... + 6356742096.

It is an arithmetic number, because the mean of its divisors is an integer number (1125261417280).

Almost surely, 2^{121102112210121} is an apocalyptic number.

It is an amenable number.

121102112210121 is a deficient number, since it is larger than the sum of its proper divisors (94948079907639).

121102112210121 is a wasteful number, since it uses less digits than its factorization.

121102112210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20116 (or 20113 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 121102112210121 its reverse (121012211201121), we get a palindrome (242114323411242).

The spelling of 121102112210121 in words is "one hundred twenty-one trillion, one hundred two billion, one hundred twelve million, two hundred ten thousand, one hundred twenty-one".