2121002306 has 4 divisors (see below), whose sum is σ = 3181503462. Its totient is φ = 1060501152.

The previous prime is 2121002287. The next prime is 2121002321. The reversal of 2121002306 is 6032001212.

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., 1966124281 + 154878025 = 44341^2 + 12445^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530250575 + ... + 530250578.

Almost surely, 2^2121002306 is an apocalyptic number.

2121002306 is a deficient number, since it is larger than the sum of its proper divisors (1060501156).

2121002306 is a wasteful number, since it uses less digits than its factorization.

2121002306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060501155.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2121002306 is about 46054.3407943269. The cubic root of 2121002306 is about 1284.8340777051.

Adding to 2121002306 its reverse (6032001212), we get a palindrome (8153003518).

The spelling of 2121002306 in words is "two billion, one hundred twenty-one million, two thousand, three hundred six".