20120001111013 has 4 divisors (see below), whose sum is σ = 20204185216320. Its totient is φ = 20035817005708.

The previous prime is 20120001110969. The next prime is 20120001111029. The reversal of 20120001111013 is 31011110002102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20120001111013 - 2¹³ = 20120001102821 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20120001110984 and 20120001111002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100001111013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42092052295 + ... + 42092052772.

It is an arithmetic number, because the mean of its divisors is an integer number (5051046304080).

Almost surely, 2^{20120001111013} is an apocalyptic number.

It is an amenable number.

20120001111013 is a deficient number, since it is larger than the sum of its proper divisors (84184105307).

20120001111013 is an equidigital number, since it uses as much as digits as its factorization.

20120001111013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84184105306.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 20120001111013 its reverse (31011110002102), we get a palindrome (51131111113115).

The spelling of 20120001111013 in words is "twenty trillion, one hundred twenty billion, one million, one hundred eleven thousand, thirteen".