1224054121 has 4 divisors (see below), whose sum is σ = 1244120644. Its totient is φ = 1203987600.

The previous prime is 1224054109. The next prime is 1224054137. The reversal of 1224054121 is 1214504221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1214504221 = 7 ⋅173500603.

It can be written as a sum of positive squares in 2 ways, for example, as 83978896 + 1140075225 = 9164^2 + 33765^2 .

It is a cyclic number.

It is not a de Polignac number, because 1224054121 - 2⁷ = 1224053993 is a prime.

It is a super-2 number, since 2×1224054121² = 2996616982274165282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1224054092 and 1224054101.

It is not an unprimeable number, because it can be changed into a prime (1224054101) 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, 10033170 + ... + 10033291.

It is an arithmetic number, because the mean of its divisors is an integer number (311030161).

Almost surely, 2^1224054121 is an apocalyptic number.

It is an amenable number.

1224054121 is a deficient number, since it is larger than the sum of its proper divisors (20066523).

1224054121 is an equidigital number, since it uses as much as digits as its factorization.

1224054121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20066522.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1224054121 is about 34986.4848334325. The cubic root of 1224054121 is about 1069.7120140914.

Adding to 1224054121 its reverse (1214504221), we get a palindrome (2438558342).

The spelling of 1224054121 in words is "one billion, two hundred twenty-four million, fifty-four thousand, one hundred twenty-one".