20111012013 has 8 divisors (see below), whose sum is σ = 27679672576. Its totient is φ = 12974846400.

The previous prime is 20111012011. The next prime is 20111012027. The reversal of 20111012013 is 31021011102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20111012013 - 2¹ = 20111012011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20111012013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111012011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108123628 + ... + 108123813.

It is an arithmetic number, because the mean of its divisors is an integer number (3459959072).

Almost surely, 2^20111012013 is an apocalyptic number.

It is an amenable number.

20111012013 is a deficient number, since it is larger than the sum of its proper divisors (7568660563).

20111012013 is a wasteful number, since it uses less digits than its factorization.

20111012013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216247475.

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

Adding to 20111012013 its reverse (31021011102), we get a palindrome (51132023115).

The spelling of 20111012013 in words is "twenty billion, one hundred eleven million, twelve thousand, thirteen".