1221112341224 has 16 divisors (see below), whose sum is σ = 2293446670020. Its totient is φ = 609526562560.

The previous prime is 1221112341209. The next prime is 1221112341233. The reversal of 1221112341224 is 4221432111221.

It can be written as a sum of positive squares in 2 ways, for example, as 1167441352324 + 53670988900 = 1080482^2 + 231670^2 .

It is a super-2 number, since 2×1221112341224² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1221112341193 and 1221112341202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128695967 + ... + 128705454.

Almost surely, 2^{1221112341224} is an apocalyptic number.

It is an amenable number.

1221112341224 is a deficient number, since it is larger than the sum of its proper divisors (1072334328796).

1221112341224 is a wasteful number, since it uses less digits than its factorization.

1221112341224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257402020 (or 257402016 counting only the distinct ones).

The product of its digits is 1536, while the sum is 26.

Adding to 1221112341224 its reverse (4221432111221), we get a palindrome (5442544452445).

The spelling of 1221112341224 in words is "one trillion, two hundred twenty-one billion, one hundred twelve million, three hundred forty-one thousand, two hundred twenty-four".