2113163421 has 8 divisors (see below), whose sum is σ = 2827949184. Its totient is φ = 1403576640.

The previous prime is 2113163417. The next prime is 2113163449. The reversal of 2113163421 is 1243613112.

It is a happy number.

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

It is not a de Polignac number, because 2113163421 - 2² = 2113163417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2113163391 and 2113163400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113163471) 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, 1298796 + ... + 1300421.

It is an arithmetic number, because the mean of its divisors is an integer number (353493648).

Almost surely, 2^2113163421 is an apocalyptic number.

It is an amenable number.

2113163421 is a deficient number, since it is larger than the sum of its proper divisors (714785763).

2113163421 is a wasteful number, since it uses less digits than its factorization.

2113163421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2599491.

The product of its digits is 864, while the sum is 24.

The square root of 2113163421 is about 45969.1572796370. The cubic root of 2113163421 is about 1283.2492766819.

Adding to 2113163421 its reverse (1243613112), we get a palindrome (3356776533).

The spelling of 2113163421 in words is "two billion, one hundred thirteen million, one hundred sixty-three thousand, four hundred twenty-one".