2121222113 has 8 divisors (see below), whose sum is σ = 2157153600. Its totient is φ = 2085328080.

The previous prime is 2121222109. The next prime is 2121222163. The reversal of 2121222113 is 3112221212.

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 2121222113 - 2² = 2121222109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2121222091 and 2121222100.

It is not an unprimeable number, because it can be changed into a prime (2121222163) 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, 119756 + ... + 136322.

It is an arithmetic number, because the mean of its divisors is an integer number (269644200).

Almost surely, 2^2121222113 is an apocalyptic number.

It is an amenable number.

2121222113 is a deficient number, since it is larger than the sum of its proper divisors (35931487).

2121222113 is a wasteful number, since it uses less digits than its factorization.

2121222113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18727.

The product of its digits is 96, while the sum is 17.

The square root of 2121222113 is about 46056.7271199333. The cubic root of 2121222113 is about 1284.8784601444.

Adding to 2121222113 its reverse (3112221212), we get a palindrome (5233443325).

Subtracting 2121222113 from its reverse (3112221212), we obtain a palindrome (990999099).

The spelling of 2121222113 in words is "two billion, one hundred twenty-one million, two hundred twenty-two thousand, one hundred thirteen".