111212212115 has 8 divisors (see below), whose sum is σ = 133660925280. Its totient is φ = 88832255872.

The previous prime is 111212212109. The next prime is 111212212129. The reversal of 111212212115 is 511212212111.

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

It is a cyclic number.

It is not a de Polignac number, because 111212212115 - 2⁶ = 111212212051 is a prime.

It is a super-2 number, since 2×111212212115² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17185670 + ... + 17192139.

It is an arithmetic number, because the mean of its divisors is an integer number (16707615660).

Almost surely, 2^111212212115 is an apocalyptic number.

111212212115 is a deficient number, since it is larger than the sum of its proper divisors (22448713165).

111212212115 is an equidigital number, since it uses as much as digits as its factorization.

111212212115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34378461.

The product of its digits is 80, while the sum is 20.

Adding to 111212212115 its reverse (511212212111), we get a palindrome (622424424226).

The spelling of 111212212115 in words is "one hundred eleven billion, two hundred twelve million, two hundred twelve thousand, one hundred fifteen".