2122221211 has 8 divisors (see below), whose sum is σ = 2316538224. Its totient is φ = 1928135520.

The previous prime is 2122221151. The next prime is 2122221217. The reversal of 2122221211 is 1121222212.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2122221211 - 2⁷ = 2122221083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2122221217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38356 + ... + 75601.

It is an arithmetic number, because the mean of its divisors is an integer number (289567278).

Almost surely, 2^2122221211 is an apocalyptic number.

2122221211 is a deficient number, since it is larger than the sum of its proper divisors (194317013).

2122221211 is a wasteful number, since it uses less digits than its factorization.

2122221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115661.

The product of its digits is 64, while the sum is 16.

The square root of 2122221211 is about 46067.5722281954. The cubic root of 2122221211 is about 1285.0801548813.

Adding to 2122221211 its reverse (1121222212), we get a palindrome (3243443423).

It can be divided in two parts, 21222212 and 11, that multiplied together give a palindrome (233444332).

The spelling of 2122221211 in words is "two billion, one hundred twenty-two million, two hundred twenty-one thousand, two hundred eleven".