12211112021112 has 24 divisors (see below), whose sum is σ = 33071761724040. Its totient is φ = 4070370673680.

The previous prime is 12211112021047. The next prime is 12211112021131. The reversal of 12211112021112 is 21112021111221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×12211112021112² (a number of 27 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 5 ways as a sum of consecutive naturals, for example, 84799388964 + ... + 84799389107.

It is an arithmetic number, because the mean of its divisors is an integer number (1377990071835).

Almost surely, 2^{12211112021112} is an apocalyptic number.

12211112021112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12211112021112 is an abundant number, since it is smaller than the sum of its proper divisors (20860649702928).

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

12211112021112 is a wasteful number, since it uses less digits than its factorization.

12211112021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169598778083 (or 169598778076 counting only the distinct ones).

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

Adding to 12211112021112 its reverse (21112021111221), we get a palindrome (33323133132333).

The spelling of 12211112021112 in words is "twelve trillion, two hundred eleven billion, one hundred twelve million, twenty-one thousand, one hundred twelve".