111110221201212 has 72 divisors (see below), whose sum is σ = 283681194429360. Its totient is φ = 36665071027200.

The previous prime is 111110221201207. The next prime is 111110221201223. The reversal of 111110221201212 is 212102122011111.

It is a happy number.

111110221201212 is a `hidden beast` number, since 11 + 11 + 10 + 221 + 201 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24814239 + ... + 28947657.

Almost surely, 2^{111110221201212} is an apocalyptic number.

111110221201212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111110221201212 is an abundant number, since it is smaller than the sum of its proper divisors (172570973228148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111110221201212 is a wasteful number, since it uses less digits than its factorization.

111110221201212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4140923 (or 4140918 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 111110221201212 its reverse (212102122011111), we get a palindrome (323212343212323).

The spelling of 111110221201212 in words is "one hundred eleven trillion, one hundred ten billion, two hundred twenty-one million, two hundred one thousand, two hundred twelve".