2321212125166 has 16 divisors (see below), whose sum is σ = 3798448259760. Its totient is φ = 1055068324480.

The previous prime is 2321212125163. The next prime is 2321212125179. The reversal of 2321212125166 is 6615212121232.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321212125163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 548251 + ... + 2223286.

It is an arithmetic number, because the mean of its divisors is an integer number (237403016235).

Almost surely, 2^{2321212125166} is an apocalyptic number.

2321212125166 is a deficient number, since it is larger than the sum of its proper divisors (1477236134594).

2321212125166 is a wasteful number, since it uses less digits than its factorization.

2321212125166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2809619.

The product of its digits is 17280, while the sum is 34.

Adding to 2321212125166 its reverse (6615212121232), we get a palindrome (8936424246398).

The spelling of 2321212125166 in words is "two trillion, three hundred twenty-one billion, two hundred twelve million, one hundred twenty-five thousand, one hundred sixty-six".