111212012210211 has 32 divisors (see below), whose sum is σ = 182683086819840. Its totient is φ = 66296281485600.

The previous prime is 111212012210207. The next prime is 111212012210231. The reversal of 111212012210211 is 112012210212111.

It is a happy number.

111212012210211 is a `hidden beast` number, since 1 + 11 + 21 + 201 + 221 + 0 + 211 = 666.

It is not a de Polignac number, because 111212012210211 - 2² = 111212012210207 is a prime.

It is a super-2 number, since 2×111212012210211² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111212012210231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3069254175 + ... + 3069290408.

It is an arithmetic number, because the mean of its divisors is an integer number (5708846463120).

Almost surely, 2^{111212012210211} is an apocalyptic number.

111212012210211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111212012210211 is a deficient number, since it is larger than the sum of its proper divisors (71471074609629).

111212012210211 is a wasteful number, since it uses less digits than its factorization.

111212012210211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6138544664 (or 6138544658 counting only the distinct ones).

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

Adding to 111212012210211 its reverse (112012210212111), we get a palindrome (223224222422322).

It can be divided in two parts, 1112120 and 12210211, that added together give a palindrome (13322331).

The spelling of 111212012210211 in words is "one hundred eleven trillion, two hundred twelve billion, twelve million, two hundred ten thousand, two hundred eleven".