2121212012013 has 12 divisors (see below), whose sum is σ = 3076792879680. Its totient is φ = 1408224430536.

The previous prime is 2121212011979. The next prime is 2121212012057. The reversal of 2121212012013 is 3102102121212.

It is not a de Polignac number, because 2121212012013 - 2¹⁴ = 2121211995629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121212012093) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 493073631 + ... + 493077932.

It is an arithmetic number, because the mean of its divisors is an integer number (256399406640).

Almost surely, 2^{2121212012013} is an apocalyptic number.

It is an amenable number.

2121212012013 is a deficient number, since it is larger than the sum of its proper divisors (955580867667).

2121212012013 is a wasteful number, since it uses less digits than its factorization.

2121212012013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986151808 (or 986151805 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 2121212012013 its reverse (3102102121212), we get a palindrome (5223314133225).

The spelling of 2121212012013 in words is "two trillion, one hundred twenty-one billion, two hundred twelve million, twelve thousand, thirteen".