2112022122121 has 16 divisors (see below), whose sum is σ = 2238592220800. Its totient is φ = 1987001280000.

The previous prime is 2112022122109. The next prime is 2112022122137. The reversal of 2112022122121 is 1212212202112.

It is a cyclic number.

It is not a de Polignac number, because 2112022122121 - 2²⁷ = 2111887904393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (2112022122181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9359065 + ... + 9582073.

It is an arithmetic number, because the mean of its divisors is an integer number (139912013800).

Almost surely, 2^{2112022122121} is an apocalyptic number.

It is an amenable number.

2112022122121 is a deficient number, since it is larger than the sum of its proper divisors (126570098679).

2112022122121 is a wasteful number, since it uses less digits than its factorization.

2112022122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226480.

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

Adding to 2112022122121 its reverse (1212212202112), we get a palindrome (3324234324233).

The spelling of 2112022122121 in words is "two trillion, one hundred twelve billion, twenty-two million, one hundred twenty-two thousand, one hundred twenty-one".