12021111123030 has 128 divisors (see below), whose sum is σ = 32522059146240. Its totient is φ = 3159125349120.

The previous prime is 12021111123011. The next prime is 12021111123037. The reversal of 12021111123030 is 3032111112021.

It is a super-2 number, since 2×12021111123030² (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 junction number, because it is equal to n+sod(n) for n = 12021111122994 and 12021111123012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021111123037) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 23855985 + ... + 24354675.

It is an arithmetic number, because the mean of its divisors is an integer number (254078587080).

Almost surely, 2^{12021111123030} is an apocalyptic number.

12021111123030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12021111123030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16261029573120).

12021111123030 is an abundant number, since it is smaller than the sum of its proper divisors (20500948023210).

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

12021111123030 is a wasteful number, since it uses less digits than its factorization.

12021111123030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500003 (or 499997 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 12021111123030 its reverse (3032111112021), we get a palindrome (15053222235051).

The spelling of 12021111123030 in words is "twelve trillion, twenty-one billion, one hundred eleven million, one hundred twenty-three thousand, thirty".