2121112220212 has 24 divisors (see below), whose sum is σ = 3881421734400. Its totient is φ = 1012327114656.

The previous prime is 2121112220203. The next prime is 2121112220221. The reversal of 2121112220212 is 2120222111212.

It is an interprime number because it is at equal distance from previous prime (2121112220203) and next prime (2121112220221).

It is a self number, because there is not a number n which added to its sum of digits gives 2121112220212.

It is a congruent number.

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, 24022287 + ... + 24110422.

It is an arithmetic number, because the mean of its divisors is an integer number (161725905600).

Almost surely, 2^{2121112220212} is an apocalyptic number.

It is an amenable number.

2121112220212 is a deficient number, since it is larger than the sum of its proper divisors (1760309514188).

2121112220212 is a wasteful number, since it uses less digits than its factorization.

2121112220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48133215 (or 48133213 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 2121112220212 its reverse (2120222111212), we get a palindrome (4241334331424).

The spelling of 2121112220212 in words is "two trillion, one hundred twenty-one billion, one hundred twelve million, two hundred twenty thousand, two hundred twelve".