12211220333123 has 16 divisors (see below), whose sum is σ = 15078166084800. Its totient is φ = 9851068499328.

The previous prime is 12211220333101. The next prime is 12211220333173. The reversal of 12211220333123 is 32133302211221.

It is not a de Polignac number, because 12211220333123 - 2¹⁸ = 12211220070979 is a prime.

It is a super-4 number, since 4×12211220333123⁴ (a number of 53 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 12211220333092 and 12211220333101.

It is not an unprimeable number, because it can be changed into a prime (12211220333173) 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, 1047089036 + ... + 1047100697.

It is an arithmetic number, because the mean of its divisors is an integer number (942385380300).

Almost surely, 2^{12211220333123} is an apocalyptic number.

12211220333123 is a deficient number, since it is larger than the sum of its proper divisors (2866945751677).

12211220333123 is an equidigital number, since it uses as much as digits as its factorization.

12211220333123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2094189771 (or 2094189757 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 12211220333123 its reverse (32133302211221), we get a palindrome (44344522544344).

The spelling of 12211220333123 in words is "twelve trillion, two hundred eleven billion, two hundred twenty million, three hundred thirty-three thousand, one hundred twenty-three".