100354513132421 has 16 divisors (see below), whose sum is σ = 102365423134704. Its totient is φ = 98348008771584.

The previous prime is 100354513132417. The next prime is 100354513132427. The reversal of 100354513132421 is 124231315453001.

It can be written as a sum of positive squares in 8 ways, for example, as 4697995560196 + 95656517572225 = 2167486^2 + 9780415^2 .

It is a cyclic number.

It is not a de Polignac number, because 100354513132421 - 2² = 100354513132417 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 (100354513132427) 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, 186056495 + ... + 186595091.

It is an arithmetic number, because the mean of its divisors is an integer number (6397838945919).

Almost surely, 2^{100354513132421} is an apocalyptic number.

It is an amenable number.

100354513132421 is a deficient number, since it is larger than the sum of its proper divisors (2010910002283).

100354513132421 is a wasteful number, since it uses less digits than its factorization.

100354513132421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542680.

The product of its (nonzero) digits is 43200, while the sum is 35.

Adding to 100354513132421 its reverse (124231315453001), we get a palindrome (224585828585422).

The spelling of 100354513132421 in words is "one hundred trillion, three hundred fifty-four billion, five hundred thirteen million, one hundred thirty-two thousand, four hundred twenty-one".