111012121213 has 32 divisors (see below), whose sum is σ = 130122989568. Its totient is φ = 92747592000.

The previous prime is 111012121211. The next prime is 111012121217. The reversal of 111012121213 is 312121210111.

It is a happy number.

It is not a de Polignac number, because 111012121213 - 2¹ = 111012121211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111012121211) 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, 48539356 + ... + 48541642.

It is an arithmetic number, because the mean of its divisors is an integer number (4066343424).

Almost surely, 2^111012121213 is an apocalyptic number.

It is an amenable number.

111012121213 is a deficient number, since it is larger than the sum of its proper divisors (19110868355).

111012121213 is a wasteful number, since it uses less digits than its factorization.

111012121213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3433.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 111012121213 its reverse (312121210111), we get a palindrome (423133331324).

The spelling of 111012121213 in words is "one hundred eleven billion, twelve million, one hundred twenty-one thousand, two hundred thirteen".