12212011221102 has 288 divisors, whose sum is σ = 35505921604608. Its totient is φ = 2994757920000.

The previous prime is 12212011221079. The next prime is 12212011221103. The reversal of 12212011221102 is 20112211021221.

It is a super-2 number, since 2×12212011221102² (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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212011221103) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 11836077 + ... + 12826407.

It is an arithmetic number, because the mean of its divisors is an integer number (123284450016).

Almost surely, 2^{12212011221102} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12212011221102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17752960802304).

12212011221102 is an abundant number, since it is smaller than the sum of its proper divisors (23293910383506).

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

12212011221102 is a wasteful number, since it uses less digits than its factorization.

12212011221102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990436 (or 990426 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12212011221102 its reverse (20112211021221), we get a palindrome (32324222242323).

The spelling of 12212011221102 in words is "twelve trillion, two hundred twelve billion, eleven million, two hundred twenty-one thousand, one hundred two".