12211203024 has 120 divisors (see below), whose sum is σ = 36407148960. Its totient is φ = 3809638656.

The previous prime is 12211203019. The next prime is 12211203029. The reversal of 12211203024 is 42030211221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12211203019) and next prime (12211203029).

It is a super-2 number, since 2×12211203024² (a number of 21 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 12211202988 and 12211203006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211203029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 200202 + ... + 253974.

It is an arithmetic number, because the mean of its divisors is an integer number (303392908).

Almost surely, 2^12211203024 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12211203024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18203574480).

12211203024 is an abundant number, since it is smaller than the sum of its proper divisors (24195945936).

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

12211203024 is a wasteful number, since it uses less digits than its factorization.

12211203024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53889 (or 53880 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 12211203024 its reverse (42030211221), we get a palindrome (54241414245).

The spelling of 12211203024 in words is "twelve billion, two hundred eleven million, two hundred three thousand, twenty-four".