20121212013 has 32 divisors (see below), whose sum is σ = 31740979200. Its totient is φ = 11093374656.

The previous prime is 20121212011. The next prime is 20121212099. The reversal of 20121212013 is 31021212102.

It is not a de Polignac number, because 20121212013 - 2¹ = 20121212011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20121211983 and 20121212001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121212011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 892008 + ... + 914286.

It is an arithmetic number, because the mean of its divisors is an integer number (991905600).

Almost surely, 2^20121212013 is an apocalyptic number.

It is an amenable number.

20121212013 is a deficient number, since it is larger than the sum of its proper divisors (11619767187).

20121212013 is a wasteful number, since it uses less digits than its factorization.

20121212013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23801.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 20121212013 its reverse (31021212102), we get a palindrome (51142424115).

The spelling of 20121212013 in words is "twenty billion, one hundred twenty-one million, two hundred twelve thousand, thirteen".