210112012220121 has 64 divisors (see below), whose sum is σ = 348385155148800. Its totient is φ = 124046220009600.

The previous prime is 210112012220111. The next prime is 210112012220137. The reversal of 210112012220121 is 121022210211012.

210112012220121 is a `hidden beast` number, since 210 + 11 + 201 + 2 + 220 + 1 + 21 = 666.

It is not a de Polignac number, because 210112012220121 - 2¹⁸ = 210112011957977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210112012220094 and 210112012220103.

It is not an unprimeable number, because it can be changed into a prime (210112012220111) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5067031 + ... + 21116316.

It is an arithmetic number, because the mean of its divisors is an integer number (5443518049200).

Almost surely, 2^{210112012220121} is an apocalyptic number.

It is an amenable number.

210112012220121 is a deficient number, since it is larger than the sum of its proper divisors (138273142928679).

210112012220121 is a wasteful number, since it uses less digits than its factorization.

210112012220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26184067 (or 26184061 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 210112012220121 its reverse (121022210211012), we get a palindrome (331134222431133).

The spelling of 210112012220121 in words is "two hundred ten trillion, one hundred twelve billion, twelve million, two hundred twenty thousand, one hundred twenty-one".