100021002010321 has 4 divisors (see below), whose sum is σ = 114309716583232. Its totient is φ = 85732287437412.

The previous prime is 100021002010273. The next prime is 100021002010337. The reversal of 100021002010321 is 123010200120001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 100021002010321 - 2¹⁵ = 100021001977553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100021002010121) 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, 7144357286445 + ... + 7144357286458.

It is an arithmetic number, because the mean of its divisors is an integer number (28577429145808).

Almost surely, 2^{100021002010321} is an apocalyptic number.

It is an amenable number.

100021002010321 is a deficient number, since it is larger than the sum of its proper divisors (14288714572911).

100021002010321 is an equidigital number, since it uses as much as digits as its factorization.

100021002010321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14288714572910.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 100021002010321 its reverse (123010200120001), we get a palindrome (223031202130322).

The spelling of 100021002010321 in words is "one hundred trillion, twenty-one billion, two million, ten thousand, three hundred twenty-one".