535105104221 has 4 divisors (see below), whose sum is σ = 535136346492. Its totient is φ = 535073861952.

The previous prime is 535105104179. The next prime is 535105104323. The reversal of 535105104221 is 122401501535.

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 55701192121 + 479403912100 = 236011^2 + 692390^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-535105104221 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 (535105004221) 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, 15595430 + ... + 15629703.

It is an arithmetic number, because the mean of its divisors is an integer number (133784086623).

Almost surely, 2^535105104221 is an apocalyptic number.

It is an amenable number.

535105104221 is a deficient number, since it is larger than the sum of its proper divisors (31242271).

535105104221 is a wasteful number, since it uses less digits than its factorization.

535105104221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31242270.

The product of its (nonzero) digits is 6000, while the sum is 29.

Adding to 535105104221 its reverse (122401501535), we get a palindrome (657506605756).

The spelling of 535105104221 in words is "five hundred thirty-five billion, one hundred five million, one hundred four thousand, two hundred twenty-one".