2212112210121 has 48 divisors (see below), whose sum is σ = 3598564589568. Its totient is φ = 1297293688800.

The previous prime is 2212112210111. The next prime is 2212112210131. The reversal of 2212112210121 is 1210122112122.

2212112210121 is a `hidden beast` number, since 221 + 2 + 112 + 210 + 121 = 666.

It is an interprime number because it is at equal distance from previous prime (2212112210111) and next prime (2212112210131).

It is not a de Polignac number, because 2212112210121 - 2⁹ = 2212112209609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2212112210094 and 2212112210103.

It is not an unprimeable number, because it can be changed into a prime (2212112210111) 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, 35529400 + ... + 35591606.

It is an arithmetic number, because the mean of its divisors is an integer number (74970095616).

Almost surely, 2^{2212112210121} is an apocalyptic number.

It is an amenable number.

2212112210121 is a deficient number, since it is larger than the sum of its proper divisors (1386452379447).

2212112210121 is a wasteful number, since it uses less digits than its factorization.

2212112210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73842 (or 73839 counting only the distinct ones).

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

Adding to 2212112210121 its reverse (1210122112122), we get a palindrome (3422234322243).

The spelling of 2212112210121 in words is "two trillion, two hundred twelve billion, one hundred twelve million, two hundred ten thousand, one hundred twenty-one".