11212212012210 has 96 divisors (see below), whose sum is σ = 31839021257472. Its totient is φ = 2714940138240.

The previous prime is 11212212012137. The next prime is 11212212012217. The reversal of 11212212012210 is 1221021221211.

11212212012210 is a `hidden beast` number, since 1 + 1 + 21 + 221 + 201 + 221 + 0 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (11212212012217) by changing a digit.

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 in 47 ways as a sum of consecutive naturals, for example, 5759194 + ... + 7456053.

It is an arithmetic number, because the mean of its divisors is an integer number (331656471432).

Almost surely, 2^{11212212012210} is an apocalyptic number.

11212212012210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11212212012210 is an abundant number, since it is smaller than the sum of its proper divisors (20626809245262).

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

11212212012210 is a wasteful number, since it uses less digits than its factorization.

11212212012210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13216128 (or 13216125 counting only the distinct ones).

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

Adding to 11212212012210 its reverse (1221021221211), we get a palindrome (12433233233421).

The spelling of 11212212012210 in words is "eleven trillion, two hundred twelve billion, two hundred twelve million, twelve thousand, two hundred ten".