20521034122315 has 8 divisors (see below), whose sum is σ = 24819140482560. Its totient is φ = 16287560940672.

The previous prime is 20521034122201. The next prime is 20521034122361. The reversal of 20521034122315 is 51322143012502.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20521034122315 - 2¹⁵ = 20521034089547 is a prime.

It is a super-2 number, since 2×20521034122315² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16158293950 + ... + 16158295219.

It is an arithmetic number, because the mean of its divisors is an integer number (3102392560320).

Almost surely, 2^{20521034122315} is an apocalyptic number.

20521034122315 is a deficient number, since it is larger than the sum of its proper divisors (4298106360245).

20521034122315 is a wasteful number, since it uses less digits than its factorization.

20521034122315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32316589301.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 20521034122315 its reverse (51322143012502), we get a palindrome (71843177134817).

The spelling of 20521034122315 in words is "twenty trillion, five hundred twenty-one billion, thirty-four million, one hundred twenty-two thousand, three hundred fifteen".