2121022211 has 64 divisors (see below), whose sum is σ = 2866544640. Its totient is φ = 1520787840.

The previous prime is 2121022181. The next prime is 2121022219. The reversal of 2121022211 is 1122201212.

It is not a de Polignac number, because 2121022211 - 2¹⁴ = 2121005827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121022219) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 5537726 + ... + 5538108.

It is an arithmetic number, because the mean of its divisors is an integer number (44789760).

Almost surely, 2^2121022211 is an apocalyptic number.

2121022211 is a deficient number, since it is larger than the sum of its proper divisors (745522429).

2121022211 is a wasteful number, since it uses less digits than its factorization.

2121022211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 2121022211 is about 46054.5568972279. The cubic root of 2121022211 is about 1284.8380969593.

Adding to 2121022211 its reverse (1122201212), we get a palindrome (3243223423).

The spelling of 2121022211 in words is "two billion, one hundred twenty-one million, twenty-two thousand, two hundred eleven".