2121224122 has 16 divisors (see below), whose sum is σ = 3192537600. Its totient is φ = 1057052160.

The previous prime is 2121224117. The next prime is 2121224123. The reversal of 2121224122 is 2214221212.

It is a self number, because there is not a number n which added to its sum of digits gives 2121224122.

It is not an unprimeable number, because it can be changed into a prime (2121224123) 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, 946279 + ... + 948517.

It is an arithmetic number, because the mean of its divisors is an integer number (199533600).

Almost surely, 2^2121224122 is an apocalyptic number.

2121224122 is a deficient number, since it is larger than the sum of its proper divisors (1071313478).

2121224122 is a wasteful number, since it uses less digits than its factorization.

2121224122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3621.

The product of its digits is 256, while the sum is 19.

The square root of 2121224122 is about 46056.7489299885. The cubic root of 2121224122 is about 1284.8788657785.

Adding to 2121224122 its reverse (2214221212), we get a palindrome (4335445334).

The spelling of 2121224122 in words is "two billion, one hundred twenty-one million, two hundred twenty-four thousand, one hundred twenty-two".