12211112221154 has 64 divisors (see below), whose sum is σ = 23533432215552. Its totient is φ = 4613743708800.

The previous prime is 12211112221153. The next prime is 12211112221159. The reversal of 12211112221154 is 45112221111221.

It is a happy number.

It is a super-2 number, since 2×12211112221154² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12211112221153) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4735904 + ... + 6844779.

It is an arithmetic number, because the mean of its divisors is an integer number (367709878368).

Almost surely, 2^{12211112221154} is an apocalyptic number.

12211112221154 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12211112221154 is a deficient number, since it is larger than the sum of its proper divisors (11322319994398).

12211112221154 is a wasteful number, since it uses less digits than its factorization.

12211112221154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11580911.

The product of its digits is 640, while the sum is 26.

Adding to 12211112221154 its reverse (45112221111221), we get a palindrome (57323333332375).

The spelling of 12211112221154 in words is "twelve trillion, two hundred eleven billion, one hundred twelve million, two hundred twenty-one thousand, one hundred fifty-four".