1223174961211 has 4 divisors (see below), whose sum is σ = 1397914241392. Its totient is φ = 1048435681032.

The previous prime is 1223174961193. The next prime is 1223174961223. The reversal of 1223174961211 is 1121694713221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1223174961211 - 2³⁷ = 1085736007739 is a prime.

It is a super-3 number, since 3×1223174961211³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223174961271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87369640080 + ... + 87369640093.

It is an arithmetic number, because the mean of its divisors is an integer number (349478560348).

Almost surely, 2^{1223174961211} is an apocalyptic number.

1223174961211 is a deficient number, since it is larger than the sum of its proper divisors (174739280181).

1223174961211 is an equidigital number, since it uses as much as digits as its factorization.

1223174961211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174739280180.

The product of its digits is 36288, while the sum is 40.

The spelling of 1223174961211 in words is "one trillion, two hundred twenty-three billion, one hundred seventy-four million, nine hundred sixty-one thousand, two hundred eleven".