12212221111101 has 12 divisors (see below), whose sum is σ = 19243499932800. Its totient is φ = 7401346127880.

The previous prime is 12212221111099. The next prime is 12212221111109. The reversal of 12212221111101 is 10111112221221.

It is a happy number.

12212221111101 is a `hidden beast` number, since 1 + 221 + 222 + 111 + 110 + 1 = 666.

It is not a de Polignac number, because 12212221111101 - 2¹ = 12212221111099 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212221111109) 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, 61677884301 + ... + 61677884498.

It is an arithmetic number, because the mean of its divisors is an integer number (1603624994400).

Almost surely, 2^{12212221111101} is an apocalyptic number.

12212221111101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12212221111101 is a deficient number, since it is larger than the sum of its proper divisors (7031278821699).

12212221111101 is a wasteful number, since it uses less digits than its factorization.

12212221111101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123355768816 (or 123355768813 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 12212221111101 its reverse (10111112221221), we get a palindrome (22323333332322).

The spelling of 12212221111101 in words is "twelve trillion, two hundred twelve billion, two hundred twenty-one million, one hundred eleven thousand, one hundred one".