1334512642221 has 18 divisors (see below), whose sum is σ = 2118799228910. Its totient is φ = 808795540080.

The previous prime is 1334512642207. The next prime is 1334512642223. The reversal of 1334512642221 is 1222462154331.

It is a happy number.

1334512642221 is a `hidden beast` number, since 1 + 3 + 3 + 4 + 5 + 1 + 2 + 642 + 2 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1149053219721 + 185459422500 = 1071939^2 + 430650^2 .

It is not a de Polignac number, because 1334512642221 - 2¹⁵ = 1334512609453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1334512642223) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 612722806 + ... + 612724983.

Almost surely, 2^{1334512642221} is an apocalyptic number.

1334512642221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1334512642221 is a deficient number, since it is larger than the sum of its proper divisors (784286586689).

1334512642221 is a wasteful number, since it uses less digits than its factorization.

1334512642221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1225447817 (or 1225447803 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

Adding to 1334512642221 its reverse (1222462154331), we get a palindrome (2556974796552).

The spelling of 1334512642221 in words is "one trillion, three hundred thirty-four billion, five hundred twelve million, six hundred forty-two thousand, two hundred twenty-one".