12211112221152 has 192 divisors, whose sum is σ = 34863449886720. Its totient is φ = 3719887110144.

The previous prime is 12211112221039. The next prime is 12211112221153. The reversal of 12211112221152 is 25112221111221.

It is a super-2 number, since 2×12211112221152² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211112221153) 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, 695028624 + ... + 695046192.

It is an arithmetic number, because the mean of its divisors is an integer number (181580468160).

Almost surely, 2^{12211112221152} is an apocalyptic number.

12211112221152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12211112221152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17431724943360).

12211112221152 is an abundant number, since it is smaller than the sum of its proper divisors (22652337665568).

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

12211112221152 is a wasteful number, since it uses less digits than its factorization.

12211112221152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23105 (or 23097 counting only the distinct ones).

The product of its digits is 320, while the sum is 24.

Adding to 12211112221152 its reverse (25112221111221), we get a palindrome (37323333332373).

The spelling of 12211112221152 in words is "twelve trillion, two hundred eleven billion, one hundred twelve million, two hundred twenty-one thousand, one hundred fifty-two".