2123099984 has 20 divisors (see below), whose sum is σ = 4159728180. Its totient is φ = 1049621760.

The previous prime is 2123099983. The next prime is 2123099989. The reversal of 2123099984 is 4899903212.

It can be written as a sum of positive squares in 2 ways, for example, as 1511032384 + 612067600 = 38872^2 + 24740^2 .

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123099983) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 744047 + ... + 746894.

It is an arithmetic number, because the mean of its divisors is an integer number (207986409).

Almost surely, 2^2123099984 is an apocalyptic number.

It is an amenable number.

2123099984 is a deficient number, since it is larger than the sum of its proper divisors (2036628196).

2123099984 is a wasteful number, since it uses less digits than its factorization.

2123099984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1491038 (or 1491032 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 2123099984 is about 46077.1091107070. The cubic root of 2123099984 is about 1285.2575064693.

The spelling of 2123099984 in words is "two billion, one hundred twenty-three million, ninety-nine thousand, nine hundred eighty-four".