2210212112121 has 24 divisors (see below), whose sum is σ = 3457315068480. Its totient is φ = 1352532023136.

The previous prime is 2210212112113. The next prime is 2210212112161. The reversal of 2210212112121 is 1212112120122.

2210212112121 is a `hidden beast` number, since 221 + 0 + 21 + 211 + 212 + 1 = 666.

It is not a de Polignac number, because 2210212112121 - 2³ = 2210212112113 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2210212112094 and 2210212112103.

It is not an unprimeable number, because it can be changed into a prime (2210212112161) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52746381 + ... + 52788266.

It is an arithmetic number, because the mean of its divisors is an integer number (144054794520).

Almost surely, 2^{2210212112121} is an apocalyptic number.

It is an amenable number.

2210212112121 is a deficient number, since it is larger than the sum of its proper divisors (1247102956359).

2210212112121 is a wasteful number, since it uses less digits than its factorization.

2210212112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105534845 (or 105534842 counting only the distinct ones).

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

Adding to 2210212112121 its reverse (1212112120122), we get a palindrome (3422324232243).

The spelling of 2210212112121 in words is "two trillion, two hundred ten billion, two hundred twelve million, one hundred twelve thousand, one hundred twenty-one".