2121221134 has 8 divisors (see below), whose sum is σ = 3226646448. Its totient is φ = 1045672320.

The previous prime is 2121221131. The next prime is 2121221143. The reversal of 2121221134 is 4311221212.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121221131) 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 3 ways as a sum of consecutive naturals, for example, 7468947 + ... + 7469230.

It is an arithmetic number, because the mean of its divisors is an integer number (403330806).

Almost surely, 2^2121221134 is an apocalyptic number.

2121221134 is a deficient number, since it is larger than the sum of its proper divisors (1105425314).

2121221134 is a wasteful number, since it uses less digits than its factorization.

2121221134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14938250.

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

The square root of 2121221134 is about 46056.7164917344. The cubic root of 2121221134 is about 1284.8782624760.

Adding to 2121221134 its reverse (4311221212), we get a palindrome (6432442346).

The spelling of 2121221134 in words is "two billion, one hundred twenty-one million, two hundred twenty-one thousand, one hundred thirty-four".