1224120214221 has 24 divisors (see below), whose sum is σ = 1658358351552. Its totient is φ = 803158464000.

The previous prime is 1224120214171. The next prime is 1224120214283.

1224120214221 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1224120214221 - 2²⁹ = 1223583343309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1224120214191 and 1224120214200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224120210221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4990941 + ... + 5230461.

It is an arithmetic number, because the mean of its divisors is an integer number (69098264648).

Almost surely, 2^{1224120214221} is an apocalyptic number.

It is an amenable number.

1224120214221 is a deficient number, since it is larger than the sum of its proper divisors (434238137331).

1224120214221 is a wasteful number, since it uses less digits than its factorization.

1224120214221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239893 (or 239792 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

It can be divided in two parts, 1224120 and 214221, that added together give a palindrome (1438341).

The spelling of 1224120214221 in words is "one trillion, two hundred twenty-four billion, one hundred twenty million, two hundred fourteen thousand, two hundred twenty-one".