1224364634221 has 16 divisors (see below), whose sum is σ = 1262575366128. Its totient is φ = 1186907904000.

The previous prime is 1224364634153. The next prime is 1224364634239.

1224364634221 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 8 ways, for example, as 76113084996 + 1148251549225 = 275886^2 + 1071565^2 .

It is a cyclic number.

It is not a de Polignac number, because 1224364634221 - 2¹³ = 1224364626029 is a prime.

It is a super-2 number, since 2×1224364634221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224364634261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 404041 + ... + 1616161.

It is an arithmetic number, because the mean of its divisors is an integer number (78910960383).

Almost surely, 2^{1224364634221} is an apocalyptic number.

It is an amenable number.

1224364634221 is a deficient number, since it is larger than the sum of its proper divisors (38210731907).

1224364634221 is a wasteful number, since it uses less digits than its factorization.

1224364634221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212432.

The product of its digits is 331776, while the sum is 40.

The spelling of 1224364634221 in words is "one trillion, two hundred twenty-four billion, three hundred sixty-four million, six hundred thirty-four thousand, two hundred twenty-one".