20121032243013 has 16 divisors (see below), whose sum is σ = 28907180580096. Its totient is φ = 12375555698880.

The previous prime is 20121032243003. The next prime is 20121032243027. The reversal of 20121032243013 is 31034223012102.

It is a de Polignac number, because none of the positive numbers 2^k-20121032243013 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121032243003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137800870 + ... + 137946807.

It is an arithmetic number, because the mean of its divisors is an integer number (1806698786256).

Almost surely, 2^{20121032243013} is an apocalyptic number.

It is an amenable number.

20121032243013 is a deficient number, since it is larger than the sum of its proper divisors (8786148337083).

20121032243013 is a wasteful number, since it uses less digits than its factorization.

20121032243013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275749564.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 20121032243013 its reverse (31034223012102), we get a palindrome (51155255255115).

The spelling of 20121032243013 in words is "twenty trillion, one hundred twenty-one billion, thirty-two million, two hundred forty-three thousand, thirteen".