11122201021212 has 96 divisors (see below), whose sum is σ = 30090524352000. Its totient is φ = 3546034816896.

The previous prime is 11122201021133. The next prime is 11122201021213. The reversal of 11122201021212 is 21212010222111.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11122201021213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56285688 + ... + 56482944.

It is an arithmetic number, because the mean of its divisors is an integer number (313442962000).

Almost surely, 2^{11122201021212} is an apocalyptic number.

11122201021212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11122201021212 is an abundant number, since it is smaller than the sum of its proper divisors (18968323330788).

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

11122201021212 is a wasteful number, since it uses less digits than its factorization.

11122201021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219992 (or 219984 counting only the distinct ones).

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

Adding to 11122201021212 its reverse (21212010222111), we get a palindrome (32334211243323).

The spelling of 11122201021212 in words is "eleven trillion, one hundred twenty-two billion, two hundred one million, twenty-one thousand, two hundred twelve".