2112125145986 has 4 divisors (see below), whose sum is σ = 3168187718982. Its totient is φ = 1056062572992.

The previous prime is 2112125145941. The next prime is 2112125146007. The reversal of 2112125145986 is 6895415212112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2077146795361 + 34978350625 = 1441231^2 + 187025^2 .

It is a super-2 number, since 2×2112125145986² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2112125145986.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 528031286495 + ... + 528031286498.

Almost surely, 2^{2112125145986} is an apocalyptic number.

2112125145986 is a deficient number, since it is larger than the sum of its proper divisors (1056062572996).

2112125145986 is a wasteful number, since it uses less digits than its factorization.

2112125145986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056062572995.

The product of its digits is 345600, while the sum is 47.

The spelling of 2112125145986 in words is "two trillion, one hundred twelve billion, one hundred twenty-five million, one hundred forty-five thousand, nine hundred eighty-six".