223134502051521 has 8 divisors (see below), whose sum is σ = 330569632668960. Its totient is φ = 148756334700996.

The previous prime is 223134502051501. The next prime is 223134502051523. The reversal of 223134502051521 is 125150205431322.

223134502051521 is a `hidden beast` number, since 2 + 2 + 3 + 1 + 34 + 50 + 2 + 0 + 51 + 521 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-223134502051521 is a prime.

It is a super-3 number, since 3×223134502051521³ (a number of 44 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (223134502051523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4132120408335 + ... + 4132120408388.

It is an arithmetic number, because the mean of its divisors is an integer number (41321204083620).

Almost surely, 2^{223134502051521} is an apocalyptic number.

It is an amenable number.

223134502051521 is a deficient number, since it is larger than the sum of its proper divisors (107435130617439).

223134502051521 is an equidigital number, since it uses as much as digits as its factorization.

223134502051521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8264240816732 (or 8264240816726 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

Adding to 223134502051521 its reverse (125150205431322), we get a palindrome (348284707482843).

The spelling of 223134502051521 in words is "two hundred twenty-three trillion, one hundred thirty-four billion, five hundred two million, fifty-one thousand, five hundred twenty-one".