1224132314221 has 4 divisors (see below), whose sum is σ = 1225984254844. Its totient is φ = 1222280373600.

The previous prime is 1224132314149. The next prime is 1224132314227.

1224132314221 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 379591532100 + 844540782121 = 616110^2 + 918989^2 .

It is a cyclic number.

It is not a de Polignac number, because 1224132314221 - 2²⁵ = 1224098759789 is a prime.

It is a super-2 number, since 2×1224132314221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1224132314221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224132314227) 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, 925969320 + ... + 925970641.

It is an arithmetic number, because the mean of its divisors is an integer number (306496063711).

Almost surely, 2^{1224132314221} is an apocalyptic number.

It is an amenable number.

1224132314221 is a deficient number, since it is larger than the sum of its proper divisors (1851940623).

1224132314221 is an equidigital number, since it uses as much as digits as its factorization.

1224132314221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851940622.

The product of its digits is 4608, while the sum is 28.

The spelling of 1224132314221 in words is "one trillion, two hundred twenty-four billion, one hundred thirty-two million, three hundred fourteen thousand, two hundred twenty-one".