210112121102121 has 48 divisors (see below), whose sum is σ = 356233328151168. Its totient is φ = 116816732928000.

The previous prime is 210112121102111. The next prime is 210112121102137. The reversal of 210112121102121 is 121201121211012.

It is a happy number.

210112121102121 is a `hidden beast` number, since 210 + 1 + 121 + 211 + 0 + 2 + 121 = 666.

It is not a de Polignac number, because 210112121102121 - 2³⁹ = 209562365288233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210112121102094 and 210112121102103.

It is not an unprimeable number, because it can be changed into a prime (210112121102111) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 117741321 + ... + 119512521.

It is an arithmetic number, because the mean of its divisors is an integer number (7421527669816).

Almost surely, 2^{210112121102121} is an apocalyptic number.

210112121102121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

210112121102121 is a deficient number, since it is larger than the sum of its proper divisors (146121207049047).

210112121102121 is a wasteful number, since it uses less digits than its factorization.

210112121102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1822142 (or 1822139 counting only the distinct ones).

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

Adding to 210112121102121 its reverse (121201121211012), we get a palindrome (331313242313133).

The spelling of 210112121102121 in words is "two hundred ten trillion, one hundred twelve billion, one hundred twenty-one million, one hundred two thousand, one hundred twenty-one".