12111021221102 has 16 divisors (see below), whose sum is σ = 19236314279232. Its totient is φ = 5698959532800.

The previous prime is 12111021221059. The next prime is 12111021221107. The reversal of 12111021221102 is 20112212011121.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111021221107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10196774 + ... + 11322377.

It is an arithmetic number, because the mean of its divisors is an integer number (1202269642452).

Almost surely, 2^{12111021221102} is an apocalyptic number.

12111021221102 is a deficient number, since it is larger than the sum of its proper divisors (7125293058130).

12111021221102 is a wasteful number, since it uses less digits than its factorization.

12111021221102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21535723.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12111021221102 its reverse (20112212011121), we get a palindrome (32223233232223).

The spelling of 12111021221102 in words is "twelve trillion, one hundred eleven billion, twenty-one million, two hundred twenty-one thousand, one hundred two".