12011021022 has 128 divisors (see below), whose sum is σ = 32912409600. Its totient is φ = 2879694720.

The previous prime is 12011021003. The next prime is 12011021027. The reversal of 12011021022 is 22012011021.

It is a junction number, because it is equal to n+sod(n) for n = 12011020989 and 12011021007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011021027) 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, 273888 + ... + 314700.

It is an arithmetic number, because the mean of its divisors is an integer number (257128200).

Almost surely, 2^12011021022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12011021022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16456204800).

12011021022 is an abundant number, since it is smaller than the sum of its proper divisors (20901388578).

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

12011021022 is a wasteful number, since it uses less digits than its factorization.

12011021022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40863 (or 40849 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12011021022 its reverse (22012011021), we get a palindrome (34023032043).

The spelling of 12011021022 in words is "twelve billion, eleven million, twenty-one thousand, twenty-two".