2121147206 has 8 divisors (see below), whose sum is σ = 3183400224. Its totient is φ = 1060013800.

The previous prime is 2121147191. The next prime is 2121147229. The reversal of 2121147206 is 6027411212.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275150 + ... + 282753.

It is an arithmetic number, because the mean of its divisors is an integer number (397925028).

Almost surely, 2^2121147206 is an apocalyptic number.

2121147206 is a deficient number, since it is larger than the sum of its proper divisors (1062253018).

2121147206 is a wasteful number, since it uses less digits than its factorization.

2121147206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559806.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 2121147206 is about 46055.9139090736. The cubic root of 2121147206 is about 1284.8633356048.

Adding to 2121147206 its reverse (6027411212), we get a palindrome (8148558418).

The spelling of 2121147206 in words is "two billion, one hundred twenty-one million, one hundred forty-seven thousand, two hundred six".