2126212783989 has 32 divisors (see below), whose sum is σ = 3278405744640. Its totient is φ = 1200605844672.

The previous prime is 2126212783973. The next prime is 2126212783993. The reversal of 2126212783989 is 9893872126212.

It is not a de Polignac number, because 2126212783989 - 2⁴ = 2126212783973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2126212783969) 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 31 ways as a sum of consecutive naturals, for example, 42334 + ... + 2062575.

It is an arithmetic number, because the mean of its divisors is an integer number (102450179520).

Almost surely, 2^{2126212783989} is an apocalyptic number.

It is an amenable number.

2126212783989 is a deficient number, since it is larger than the sum of its proper divisors (1152192960651).

2126212783989 is a wasteful number, since it uses less digits than its factorization.

2126212783989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2105489.

The product of its digits is 10450944, while the sum is 60.

The spelling of 2126212783989 in words is "two trillion, one hundred twenty-six billion, two hundred twelve million, seven hundred eighty-three thousand, nine hundred eighty-nine".