100051231315521 has 16 divisors (see below), whose sum is σ = 135766802488320. Its totient is φ = 65519975776080.

The previous prime is 100051231315499. The next prime is 100051231315583. The reversal of 100051231315521 is 125513132150001.

It is not a de Polignac number, because 100051231315521 - 2¹³ = 100051231307329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100051231215521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216676965 + ... + 217138226.

It is an arithmetic number, because the mean of its divisors is an integer number (8485425155520).

Almost surely, 2^{100051231315521} is an apocalyptic number.

It is an amenable number.

100051231315521 is a deficient number, since it is larger than the sum of its proper divisors (35715571172799).

100051231315521 is a wasteful number, since it uses less digits than its factorization.

100051231315521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433816556.

The product of its (nonzero) digits is 4500, while the sum is 30.

Adding to 100051231315521 its reverse (125513132150001), we get a palindrome (225564363465522).

The spelling of 100051231315521 in words is "one hundred trillion, fifty-one billion, two hundred thirty-one million, three hundred fifteen thousand, five hundred twenty-one".