12002021122222 has 24 divisors (see below), whose sum is σ = 19455894924336. Its totient is φ = 5542162659264.

The previous prime is 12002021122129. The next prime is 12002021122229. The reversal of 12002021122222 is 22222112020021.

It is a super-2 number, since 2×12002021122222² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12002021122222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12002021122229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 155082303 + ... + 155159674.

It is an arithmetic number, because the mean of its divisors is an integer number (810662288514).

Almost surely, 2^{12002021122222} is an apocalyptic number.

12002021122222 is a deficient number, since it is larger than the sum of its proper divisors (7453873802114).

12002021122222 is a wasteful number, since it uses less digits than its factorization.

12002021122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310242060 (or 310242031 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 12002021122222 its reverse (22222112020021), we get a palindrome (34224133142243).

The spelling of 12002021122222 in words is "twelve trillion, two billion, twenty-one million, one hundred twenty-two thousand, two hundred twenty-two".