12021121202022 has 32 divisors (see below), whose sum is σ = 26782275218400. Its totient is φ = 3996739518624.

The previous prime is 12021121201951. The next prime is 12021121202071. The reversal of 12021121202022 is 22020212112021.

It is a happy number.

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 = 12021121201986 and 12021121202004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 286114413 + ... + 286156424.

It is an arithmetic number, because the mean of its divisors is an integer number (836946100575).

Almost surely, 2^{12021121202022} is an apocalyptic number.

12021121202022 is an abundant number, since it is smaller than the sum of its proper divisors (14761154016378).

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

12021121202022 is a wasteful number, since it uses less digits than its factorization.

12021121202022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572271237 (or 572271231 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12021121202022 its reverse (22020212112021), we get a palindrome (34041333314043).

Subtracting 12021121202022 from its reverse (22020212112021), we obtain a palindrome (9999090909999).

The spelling of 12021121202022 in words is "twelve trillion, twenty-one billion, one hundred twenty-one million, two hundred two thousand, twenty-two".