111212020201212 has 96 divisors (see below), whose sum is σ = 329518925514240. Its totient is φ = 31774686583680.

The previous prime is 111212020201201. The next prime is 111212020201259. The reversal of 111212020201212 is 212102020212111.

111212020201212 is a `hidden beast` number, since 1 + 112 + 120 + 20 + 201 + 212 = 666.

It is a super-2 number, since 2×111212020201212² (a number of 29 digits) contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 202735528 + ... + 203283344.

It is an arithmetic number, because the mean of its divisors is an integer number (3432488807440).

Almost surely, 2^{111212020201212} is an apocalyptic number.

111212020201212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111212020201212 is an abundant number, since it is smaller than the sum of its proper divisors (218306905313028).

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

111212020201212 is a wasteful number, since it uses less digits than its factorization.

111212020201212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816368 (or 816360 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 111212020201212 its reverse (212102020212111), we get a palindrome (323314040413323).

The spelling of 111212020201212 in words is "one hundred eleven trillion, two hundred twelve billion, twenty million, two hundred one thousand, two hundred twelve".