2121002994 has 64 divisors (see below), whose sum is σ = 4943514240. Its totient is φ = 599531520.

The previous prime is 2121002969. The next prime is 2121003013. The reversal of 2121002994 is 4992001212.

It is a happy number.

It is an unprimeable number.

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, 118422 + ... + 135150.

It is an arithmetic number, because the mean of its divisors is an integer number (77242410).

Almost surely, 2^2121002994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2121002994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2471757120).

2121002994 is an abundant number, since it is smaller than the sum of its proper divisors (2822511246).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121002994 is a wasteful number, since it uses less digits than its factorization.

2121002994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16875.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 2121002994 is about 46054.3482637633. The cubic root of 2121002994 is about 1284.8342166277.

The spelling of 2121002994 in words is "two billion, one hundred twenty-one million, two thousand, nine hundred ninety-four".