2113121005 has 8 divisors (see below), whose sum is σ = 2669205600. Its totient is φ = 1601523216.

The previous prime is 2113120963. The next prime is 2113121027. The reversal of 2113121005 is 5001213112.

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 2113121005 - 2¹⁷ = 2112989933 is a prime.

It is a super-3 number, since 3×2113121005³ (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2113121005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11121595 + ... + 11121784.

It is an arithmetic number, because the mean of its divisors is an integer number (333650700).

Almost surely, 2^2113121005 is an apocalyptic number.

It is an amenable number.

2113121005 is a deficient number, since it is larger than the sum of its proper divisors (556084595).

2113121005 is a wasteful number, since it uses less digits than its factorization.

2113121005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22243403.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 2113121005 is about 45968.6959245093. The cubic root of 2113121005 is about 1283.2406907131.

Adding to 2113121005 its reverse (5001213112), we get a palindrome (7114334117).

The spelling of 2113121005 in words is "two billion, one hundred thirteen million, one hundred twenty-one thousand, five".