111212220214 has 4 divisors (see below), whose sum is σ = 166818330324. Its totient is φ = 55606110106.

The previous prime is 111212220199. The next prime is 111212220277. The reversal of 111212220214 is 412022212111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 412022212111 = 21517 ⋅19148683.

It is a junction number, because it is equal to n+sod(n) for n = 111212220191 and 111212220200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27803055052 + ... + 27803055055.

It is an arithmetic number, because the mean of its divisors is an integer number (41704582581).

Almost surely, 2^111212220214 is an apocalyptic number.

111212220214 is a deficient number, since it is larger than the sum of its proper divisors (55606110110).

111212220214 is an equidigital number, since it uses as much as digits as its factorization.

111212220214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55606110109.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 111212220214 its reverse (412022212111), we get a palindrome (523234432325).

The spelling of 111212220214 in words is "one hundred eleven billion, two hundred twelve million, two hundred twenty thousand, two hundred fourteen".