111212000122 has 4 divisors (see below), whose sum is σ = 166818000186. Its totient is φ = 55606000060.

The previous prime is 111212000117. The next prime is 111212000189. The reversal of 111212000122 is 221000212111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 81865226641 + 29346773481 = 286121^2 + 171309^2 .

It is a super-2 number, since 2×111212000122² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27803000029 + ... + 27803000032.

Almost surely, 2^111212000122 is an apocalyptic number.

111212000122 is a deficient number, since it is larger than the sum of its proper divisors (55606000064).

111212000122 is an equidigital number, since it uses as much as digits as its factorization.

111212000122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55606000063.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 111212000122 its reverse (221000212111), we get a palindrome (332212212233).

The spelling of 111212000122 in words is "one hundred eleven billion, two hundred twelve million, one hundred twenty-two", and thus it is an aban number.