111321212013 has 48 divisors (see below), whose sum is σ = 187469919936. Its totient is φ = 62905182720.

The previous prime is 111321212011. The next prime is 111321212053. The reversal of 111321212013 is 310212123111.

It is not a de Polignac number, because 111321212013 - 2¹ = 111321212011 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111321212011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 129006 + ... + 489167.

It is an arithmetic number, because the mean of its divisors is an integer number (3905623332).

Almost surely, 2^111321212013 is an apocalyptic number.

It is an amenable number.

111321212013 is a deficient number, since it is larger than the sum of its proper divisors (76148707923).

111321212013 is a wasteful number, since it uses less digits than its factorization.

111321212013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618314 (or 618311 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 111321212013 its reverse (310212123111), we get a palindrome (421533335124).

The spelling of 111321212013 in words is "one hundred eleven billion, three hundred twenty-one million, two hundred twelve thousand, thirteen".