2121504002 has 8 divisors (see below), whose sum is σ = 3268263036. Its totient is φ = 1032082992.

The previous prime is 2121503983. The next prime is 2121504023. The reversal of 2121504002 is 2004051212.

It can be written as a sum of positive squares in 2 ways, for example, as 2034100201 + 87403801 = 45101^2 + 9349^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14334413 + ... + 14334560.

Almost surely, 2^2121504002 is an apocalyptic number.

2121504002 is a deficient number, since it is larger than the sum of its proper divisors (1146759034).

2121504002 is a wasteful number, since it uses less digits than its factorization.

2121504002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28669012.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 2121504002 is about 46059.7872552620. The cubic root of 2121504002 is about 1284.9353734146.

Adding to 2121504002 its reverse (2004051212), we get a palindrome (4125555214).

The spelling of 2121504002 in words is "two billion, one hundred twenty-one million, five hundred four thousand, two".