2122121206 has 8 divisors (see below), whose sum is σ = 3183624864. Its totient is φ = 1060912920.

The previous prime is 2122121189. The next prime is 2122121227. The reversal of 2122121206 is 6021212212.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54910 + ... + 85201.

It is an arithmetic number, because the mean of its divisors is an integer number (397953108).

Almost surely, 2^2122121206 is an apocalyptic number.

2122121206 is a deficient number, since it is larger than the sum of its proper divisors (1061503658).

2122121206 is a wasteful number, since it uses less digits than its factorization.

2122121206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147686.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 2122121206 is about 46066.4867989735. The cubic root of 2122121206 is about 1285.0599690404.

Adding to 2122121206 its reverse (6021212212), we get a palindrome (8143333418).

The spelling of 2122121206 in words is "two billion, one hundred twenty-two million, one hundred twenty-one thousand, two hundred six".