2121001206 has 32 divisors (see below), whose sum is σ = 4273572960. Its totient is φ = 701758464.

The previous prime is 2121001193. The next prime is 2121001213. The reversal of 2121001206 is 6021001212.

It is a super-2 number, since 2×2121001206² = 8997292231706908872, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 482836 + ... + 487208.

It is an arithmetic number, because the mean of its divisors is an integer number (133549155).

Almost surely, 2^2121001206 is an apocalyptic number.

2121001206 is an abundant number, since it is smaller than the sum of its proper divisors (2152571754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121001206 is a wasteful number, since it uses less digits than its factorization.

2121001206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4960.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2121001206 is about 46054.3288519114. The cubic root of 2121001206 is about 1284.8338555903.

Adding to 2121001206 its reverse (6021001212), we get a palindrome (8142002418).

The spelling of 2121001206 in words is "two billion, one hundred twenty-one million, one thousand, two hundred six".