12221111010111 has 8 divisors (see below), whose sum is σ = 16641512865024. Its totient is φ = 7974058247640.

The previous prime is 12221111010109. The next prime is 12221111010137. The reversal of 12221111010111 is 11101011112221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12221111010111 - 2¹ = 12221111010109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221111010011) 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, 43337272945 + ... + 43337273226.

It is an arithmetic number, because the mean of its divisors is an integer number (2080189108128).

Almost surely, 2^{12221111010111} is an apocalyptic number.

12221111010111 is a deficient number, since it is larger than the sum of its proper divisors (4420401854913).

12221111010111 is an equidigital number, since it uses as much as digits as its factorization.

12221111010111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86674546221.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 12221111010111 its reverse (11101011112221), we get a palindrome (23322122122332).

It can be divided in two parts, 12221 and 111010111, that multiplied together give a palindrome (1356654566531).

The spelling of 12221111010111 in words is "twelve trillion, two hundred twenty-one billion, one hundred eleven million, ten thousand, one hundred eleven".