20112212013 has 8 divisors (see below), whose sum is σ = 26816975808. Its totient is φ = 13407794784.

The previous prime is 20112212011. The next prime is 20112212017. The reversal of 20112212013 is 31021221102.

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

It is not a de Polignac number, because 20112212013 - 2¹ = 20112212011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20112211983 and 20112212001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112212011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117456 + ... + 232422.

It is an arithmetic number, because the mean of its divisors is an integer number (3352121976).

Almost surely, 2^20112212013 is an apocalyptic number.

It is an amenable number.

20112212013 is a deficient number, since it is larger than the sum of its proper divisors (6704763795).

20112212013 is a wasteful number, since it uses less digits than its factorization.

20112212013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173283.

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

Adding to 20112212013 its reverse (31021221102), we get a palindrome (51133433115).

The spelling of 20112212013 in words is "twenty billion, one hundred twelve million, two hundred twelve thousand, thirteen".