1224121153 has 12 divisors (see below), whose sum is σ = 1251253360. Its totient is φ = 1197511560.

The previous prime is 1224121097. The next prime is 1224121163. The reversal of 1224121153 is 3511214221.

It is not a de Polignac number, because 1224121153 - 2²⁵ = 1190566721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1224121163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 699826 + ... + 701572.

Almost surely, 2^1224121153 is an apocalyptic number.

It is an amenable number.

1224121153 is a deficient number, since it is larger than the sum of its proper divisors (27132207).

1224121153 is an equidigital number, since it uses as much as digits as its factorization.

1224121153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2028 (or 1957 counting only the distinct ones).

The product of its digits is 480, while the sum is 22.

The square root of 1224121153 is about 34987.4427902355. The cubic root of 1224121153 is about 1069.7315403595.

Adding to 1224121153 its reverse (3511214221), we get a palindrome (4735335374).

The spelling of 1224121153 in words is "one billion, two hundred twenty-four million, one hundred twenty-one thousand, one hundred fifty-three".