2121012100013 has 8 divisors (see below), whose sum is σ = 2184903996000. Its totient is φ = 2057782296528.

The previous prime is 2121012100001. The next prime is 2121012100027. The reversal of 2121012100013 is 3100012101212.

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 2121012100013 - 2¹⁸ = 2121011837869 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121012100043) 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, 165516623 + ... + 165529436.

It is an arithmetic number, because the mean of its divisors is an integer number (273112999500).

Almost surely, 2^{2121012100013} is an apocalyptic number.

It is an amenable number.

2121012100013 is a deficient number, since it is larger than the sum of its proper divisors (63891895987).

2121012100013 is a wasteful number, since it uses less digits than its factorization.

2121012100013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331046251.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 2121012100013 its reverse (3100012101212), we get a palindrome (5221024201225).

The spelling of 2121012100013 in words is "two trillion, one hundred twenty-one billion, twelve million, one hundred thousand, thirteen".