1223551124121 has 16 divisors (see below), whose sum is σ = 1633474828800. Its totient is φ = 814664674560.

The previous prime is 1223551124113. The next prime is 1223551124161. The reversal of 1223551124121 is 1214211553221.

It is not a de Polignac number, because 1223551124121 - 2³ = 1223551124113 is a prime.

It is a super-3 number, since 3×1223551124121³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1223551124161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8427681 + ... + 8571633.

It is an arithmetic number, because the mean of its divisors is an integer number (102092176800).

Almost surely, 2^{1223551124121} is an apocalyptic number.

It is an amenable number.

1223551124121 is a deficient number, since it is larger than the sum of its proper divisors (409923704679).

1223551124121 is a wasteful number, since it uses less digits than its factorization.

1223551124121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147536.

The product of its digits is 4800, while the sum is 30.

Adding to 1223551124121 its reverse (1214211553221), we get a palindrome (2437762677342).

The spelling of 1223551124121 in words is "one trillion, two hundred twenty-three billion, five hundred fifty-one million, one hundred twenty-four thousand, one hundred twenty-one".