111212343213 has 8 divisors (see below), whose sum is σ = 148284677088. Its totient is φ = 74140785744.

The previous prime is 111212343211. The next prime is 111212343241. The reversal of 111212343213 is 312343212111.

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

It is not a de Polignac number, because 111212343213 - 2¹ = 111212343211 is a prime.

It is a super-2 number, since 2×111212343213² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111212343211) 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, 399231 + ... + 617907.

It is an arithmetic number, because the mean of its divisors is an integer number (18535584636).

Almost surely, 2^111212343213 is an apocalyptic number.

It is an amenable number.

111212343213 is a deficient number, since it is larger than the sum of its proper divisors (37072333875).

111212343213 is a wasteful number, since it uses less digits than its factorization.

111212343213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388203.

The product of its digits is 864, while the sum is 24.

Adding to 111212343213 its reverse (312343212111), we get a palindrome (423555555324).

The spelling of 111212343213 in words is "one hundred eleven billion, two hundred twelve million, three hundred forty-three thousand, two hundred thirteen".