100221021030145 has 4 divisors (see below), whose sum is σ = 120265225236180. Its totient is φ = 80176816824112.

The previous prime is 100221021030121. The next prime is 100221021030197. The reversal of 100221021030145 is 541030120122001.

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 59249705048689 + 40971315981456 = 7697383^2 + 6400884^2 .

It is a cyclic number.

It is not a de Polignac number, because 100221021030145 - 2⁷ = 100221021030017 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10022102103010 + ... + 10022102103019.

It is an arithmetic number, because the mean of its divisors is an integer number (30066306309045).

Almost surely, 2^{100221021030145} is an apocalyptic number.

It is an amenable number.

100221021030145 is a deficient number, since it is larger than the sum of its proper divisors (20044204206035).

100221021030145 is an equidigital number, since it uses as much as digits as its factorization.

100221021030145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20044204206034.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 100221021030145 its reverse (541030120122001), we get a palindrome (641251141152146).

The spelling of 100221021030145 in words is "one hundred trillion, two hundred twenty-one billion, twenty-one million, thirty thousand, one hundred forty-five".