1224155133998 has 4 divisors (see below), whose sum is σ = 1836232701000. Its totient is φ = 612077566998.

The previous prime is 1224155133997. The next prime is 1224155134019. The reversal of 1224155133998 is 8993315514221.

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

It is a super-2 number, since 2×1224155133998² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224155133991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306038783498 + ... + 306038783501.

It is an arithmetic number, because the mean of its divisors is an integer number (459058175250).

Almost surely, 2^{1224155133998} is an apocalyptic number.

1224155133998 is a deficient number, since it is larger than the sum of its proper divisors (612077567002).

1224155133998 is an equidigital number, since it uses as much as digits as its factorization.

1224155133998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612077567001.

The product of its digits is 2332800, while the sum is 53.

The spelling of 1224155133998 in words is "one trillion, two hundred twenty-four billion, one hundred fifty-five million, one hundred thirty-three thousand, nine hundred ninety-eight".