2121032001013 has 4 divisors (see below), whose sum is σ = 2121035618988. Its totient is φ = 2121028383040.

The previous prime is 2121032001007. The next prime is 2121032001073. The reversal of 2121032001013 is 3101002301212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1106110751524 + 1014921249489 = 1051718^2 + 1007433^2 .

It is a cyclic number.

It is not a de Polignac number, because 2121032001013 - 2³³ = 2112442066421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121032001073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 705058 + ... + 2176963.

It is an arithmetic number, because the mean of its divisors is an integer number (530258904747).

Almost surely, 2^{2121032001013} is an apocalyptic number.

It is an amenable number.

2121032001013 is a deficient number, since it is larger than the sum of its proper divisors (3617975).

2121032001013 is an equidigital number, since it uses as much as digits as its factorization.

2121032001013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3617974.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 2121032001013 its reverse (3101002301212), we get a palindrome (5222034302225).

The spelling of 2121032001013 in words is "two trillion, one hundred twenty-one billion, thirty-two million, one thousand, thirteen".