2121302002 has 4 divisors (see below), whose sum is σ = 3181953006. Its totient is φ = 1060651000.

The previous prime is 2121301999. The next prime is 2121302009. The reversal of 2121302002 is 2002031212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1924489161 + 196812841 = 43869^2 + 14029^2 .

It is not an unprimeable number, because it can be changed into a prime (2121302009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530325499 + ... + 530325502.

Almost surely, 2^2121302002 is an apocalyptic number.

2121302002 is a deficient number, since it is larger than the sum of its proper divisors (1060651004).

2121302002 is a wasteful number, since it uses less digits than its factorization.

2121302002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060651003.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 2121302002 is about 46057.5944009237. The cubic root of 2121302002 is about 1284.8945902118.

Adding to 2121302002 its reverse (2002031212), we get a palindrome (4123333214).

The spelling of 2121302002 in words is "two billion, one hundred twenty-one million, three hundred two thousand, two".