2121002013 has 8 divisors (see below), whose sum is σ = 3045541408. Its totient is φ = 1305231984.

The previous prime is 2121002011. The next prime is 2121002027. The reversal of 2121002013 is 3102001212.

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

It is not a de Polignac number, because 2121002013 - 2¹ = 2121002011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2121002013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121002011) 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, 27192295 + ... + 27192372.

It is an arithmetic number, because the mean of its divisors is an integer number (380692676).

Almost surely, 2^2121002013 is an apocalyptic number.

It is an amenable number.

2121002013 is a deficient number, since it is larger than the sum of its proper divisors (924539395).

2121002013 is a wasteful number, since it uses less digits than its factorization.

2121002013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54384683.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 2121002013 is about 46054.3376133020. The cubic root of 2121002013 is about 1284.8340185418.

Adding to 2121002013 its reverse (3102001212), we get a palindrome (5223003225).

The spelling of 2121002013 in words is "two billion, one hundred twenty-one million, two thousand, thirteen".