2121112210122 has 16 divisors (see below), whose sum is σ = 4713582689280. Its totient is φ = 707037403356.

The previous prime is 2121112210111. The next prime is 2121112210169. The reversal of 2121112210122 is 2210122111212.

2121112210122 is a `hidden beast` number, since 212 + 111 + 221 + 0 + 122 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2121112210095 and 2121112210104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19639927818 + ... + 19639927925.

It is an arithmetic number, because the mean of its divisors is an integer number (294598918080).

Almost surely, 2^{2121112210122} is an apocalyptic number.

2121112210122 is an abundant number, since it is smaller than the sum of its proper divisors (2592470479158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121112210122 is a wasteful number, since it uses less digits than its factorization.

2121112210122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39279855754 (or 39279855748 counting only the distinct ones).

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

Adding to 2121112210122 its reverse (2210122111212), we get a palindrome (4331234321334).

The spelling of 2121112210122 in words is "two trillion, one hundred twenty-one billion, one hundred twelve million, two hundred ten thousand, one hundred twenty-two".