2111129984 has 16 divisors (see below), whose sum is σ = 4205767020. Its totient is φ = 1055564928.

The previous prime is 2111129981. The next prime is 2111129987. The reversal of 2111129984 is 4899211112.

It is an interprime number because it is at equal distance from previous prime (2111129981) and next prime (2111129987).

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111129981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8246474 + ... + 8246729.

Almost surely, 2^2111129984 is an apocalyptic number.

It is an amenable number.

2111129984 is a deficient number, since it is larger than the sum of its proper divisors (2094637036).

2111129984 is an equidigital number, since it uses as much as digits as its factorization.

2111129984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16493217 (or 16493205 counting only the distinct ones).

The product of its digits is 10368, while the sum is 38.

The square root of 2111129984 is about 45947.0345506650. The cubic root of 2111129984 is about 1282.8375331686.

The spelling of 2111129984 in words is "two billion, one hundred eleven million, one hundred twenty-nine thousand, nine hundred eighty-four".