2112221202123 has 8 divisors (see below), whose sum is σ = 2816327074000. Its totient is φ = 1408131399168.

The previous prime is 2112221202103. The next prime is 2112221202191. The reversal of 2112221202123 is 3212021222112.

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

It is a de Polignac number, because none of the positive numbers 2^k-2112221202123 is a prime.

It is a super-2 number, since 2×2112221202123² (a number of 25 digits) contains 22 as substring.

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 2112221202123.

It is not an unprimeable number, because it can be changed into a prime (2112221202103) by changing a digit.

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, 3707098 + ... + 4238751.

It is an arithmetic number, because the mean of its divisors is an integer number (352040884250).

Almost surely, 2^{2112221202123} is an apocalyptic number.

2112221202123 is a deficient number, since it is larger than the sum of its proper divisors (704105871877).

2112221202123 is an equidigital number, since it uses as much as digits as its factorization.

2112221202123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8034461.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 2112221202123 its reverse (3212021222112), we get a palindrome (5324242424235).

The spelling of 2112221202123 in words is "two trillion, one hundred twelve billion, two hundred twenty-one million, two hundred two thousand, one hundred twenty-three".