12211221221110 has 32 divisors (see below), whose sum is σ = 22037860464192. Its totient is φ = 4871677219200.

The previous prime is 12211221221063. The next prime is 12211221221119. The reversal of 12211221221110 is 1112212211221.

It is a happy number.

12211221221110 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12211221221110² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211221221119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39151639 + ... + 39462301.

It is an arithmetic number, because the mean of its divisors is an integer number (688683139506).

Almost surely, 2^{12211221221110} is an apocalyptic number.

12211221221110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12211221221110 is a deficient number, since it is larger than the sum of its proper divisors (9826639243082).

12211221221110 is a wasteful number, since it uses less digits than its factorization.

12211221221110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320968.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12211221221110 its reverse (1112212211221), we get a palindrome (13323433432331).

The spelling of 12211221221110 in words is "twelve trillion, two hundred eleven billion, two hundred twenty-one million, two hundred twenty-one thousand, one hundred ten".