12021200211222 has 96 divisors (see below), whose sum is σ = 26917400727360. Its totient is φ = 3874424140800.

The previous prime is 12021200211211. The next prime is 12021200211263. The reversal of 12021200211222 is 22211200212021.

It is a happy number.

12021200211222 is a `hidden beast` number, since 1 + 20 + 212 + 0 + 0 + 211 + 222 = 666.

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 = 12021200211195 and 12021200211204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 71555722 + ... + 71723522.

It is an arithmetic number, because the mean of its divisors is an integer number (280389590910).

Almost surely, 2^{12021200211222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12021200211222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13458700363680).

12021200211222 is an abundant number, since it is smaller than the sum of its proper divisors (14896200516138).

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

12021200211222 is a wasteful number, since it uses less digits than its factorization.

12021200211222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168518 (or 168515 counting only the distinct ones).

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

Adding to 12021200211222 its reverse (22211200212021), we get a palindrome (34232400423243).

The spelling of 12021200211222 in words is "twelve trillion, twenty-one billion, two hundred million, two hundred eleven thousand, two hundred twenty-two".