2121111434 has 32 divisors (see below), whose sum is σ = 3453480576. Its totient is φ = 971277120.

The previous prime is 2121111427. The next prime is 2121111467. The reversal of 2121111434 is 4341111212.

It is a super-2 number, since 2×2121111434² = 8998227430891072712, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2239349 + ... + 2240295.

It is an arithmetic number, because the mean of its divisors is an integer number (107921268).

Almost surely, 2^2121111434 is an apocalyptic number.

2121111434 is a deficient number, since it is larger than the sum of its proper divisors (1332369142).

2121111434 is a wasteful number, since it uses less digits than its factorization.

2121111434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1550.

The product of its digits is 192, while the sum is 20.

The square root of 2121111434 is about 46055.5255534013. The cubic root of 2121111434 is about 1284.8561127225.

Adding to 2121111434 its reverse (4341111212), we get a palindrome (6462222646).

The spelling of 2121111434 in words is "two billion, one hundred twenty-one million, one hundred eleven thousand, four hundred thirty-four".