2112012022121 has 4 divisors (see below), whose sum is σ = 2112092934144. Its totient is φ = 2111931110100.

The previous prime is 2112012022097. The next prime is 2112012022181. The reversal of 2112012022121 is 1212202102112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2112012022121 - 2²² = 2112007827817 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 2112012022121.

It is not an unprimeable number, because it can be changed into a prime (2112012022181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40416845 + ... + 40469066.

It is an arithmetic number, because the mean of its divisors is an integer number (528023233536).

Almost surely, 2^{2112012022121} is an apocalyptic number.

It is an amenable number.

2112012022121 is a deficient number, since it is larger than the sum of its proper divisors (80912023).

2112012022121 is an equidigital number, since it uses as much as digits as its factorization.

2112012022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80912022.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2112012022121 its reverse (1212202102112), we get a palindrome (3324214124233).

It can be divided in two parts, 211201 and 2022121, that added together give a palindrome (2233322).

The spelling of 2112012022121 in words is "two trillion, one hundred twelve billion, twelve million, twenty-two thousand, one hundred twenty-one".