20012111013 has 8 divisors (see below), whose sum is σ = 26947001376. Its totient is φ = 13209314000.

The previous prime is 20012110991. The next prime is 20012111023. The reversal of 20012111013 is 31011121002.

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

It is a cyclic number.

It is not a de Polignac number, because 20012111013 - 2⁹ = 20012110501 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20012111013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012111023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33022983 + ... + 33023588.

It is an arithmetic number, because the mean of its divisors is an integer number (3368375172).

Almost surely, 2^20012111013 is an apocalyptic number.

It is an amenable number.

20012111013 is a deficient number, since it is larger than the sum of its proper divisors (6934890363).

20012111013 is a wasteful number, since it uses less digits than its factorization.

20012111013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66046675.

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

Adding to 20012111013 its reverse (31011121002), we get a palindrome (51023232015).

The spelling of 20012111013 in words is "twenty billion, twelve million, one hundred eleven thousand, thirteen".