2212101112121 has 8 divisors (see below), whose sum is σ = 2297468169984. Its totient is φ = 2127609614160.

The previous prime is 2212101112069. The next prime is 2212101112187. The reversal of 2212101112121 is 1212111012122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2212101112121 - 2¹⁸ = 2212100849977 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2212101112121.

It is not an unprimeable number, because it can be changed into a prime (2212101112721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218884826 + ... + 218894931.

It is an arithmetic number, because the mean of its divisors is an integer number (287183521248).

Almost surely, 2^{2212101112121} is an apocalyptic number.

It is an amenable number.

2212101112121 is a deficient number, since it is larger than the sum of its proper divisors (85367057863).

2212101112121 is a wasteful number, since it uses less digits than its factorization.

2212101112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437779951.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 2212101112121 its reverse (1212111012122), we get a palindrome (3424212124243).

Subtracting from 2212101112121 its reverse (1212111012122), we obtain a palindrome (999990099999).

It can be divided in two parts, 221210 and 1112121, that added together give a palindrome (1333331).

The spelling of 2212101112121 in words is "two trillion, two hundred twelve billion, one hundred one million, one hundred twelve thousand, one hundred twenty-one".