2121214126166 has 16 divisors (see below), whose sum is σ = 3268074329520. Its totient is φ = 1031860542240.

The previous prime is 2121214126147. The next prime is 2121214126169. The reversal of 2121214126166 is 6616214121212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121214126169) 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, 182405 + ... + 2067776.

It is an arithmetic number, because the mean of its divisors is an integer number (204254645595).

Almost surely, 2^{2121214126166} is an apocalyptic number.

2121214126166 is a deficient number, since it is larger than the sum of its proper divisors (1146860203354).

2121214126166 is a wasteful number, since it uses less digits than its factorization.

2121214126166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2262959.

The product of its digits is 13824, while the sum is 35.

Adding to 2121214126166 its reverse (6616214121212), we get a palindrome (8737428247378).

The spelling of 2121214126166 in words is "two trillion, one hundred twenty-one billion, two hundred fourteen million, one hundred twenty-six thousand, one hundred sixty-six".