2121029984 has 12 divisors (see below), whose sum is σ = 4175777844. Its totient is φ = 1060514976.

The previous prime is 2121029957. The next prime is 2121029987. The reversal of 2121029984 is 4899201212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121029987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33141062 + ... + 33141125.

It is an arithmetic number, because the mean of its divisors is an integer number (347981487).

Almost surely, 2^2121029984 is an apocalyptic number.

It is an amenable number.

2121029984 is a deficient number, since it is larger than the sum of its proper divisors (2054747860).

2121029984 is an equidigital number, since it uses as much as digits as its factorization.

2121029984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66282197 (or 66282189 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 2121029984 is about 46054.6412861939. The cubic root of 2121029984 is about 1284.8396664909.

The spelling of 2121029984 in words is "two billion, one hundred twenty-one million, twenty-nine thousand, nine hundred eighty-four".