100020021121 has 8 divisors (see below), whose sum is σ = 100264155200. Its totient is φ = 99775962000.

The previous prime is 100020021119. The next prime is 100020021137. The reversal of 100020021121 is 121120020001.

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 100020021121 - 2¹ = 100020021119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100020021098 and 100020021107.

It is not an unprimeable number, because it can be changed into a prime (100020021181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3404746 + ... + 3433996.

It is an arithmetic number, because the mean of its divisors is an integer number (12533019400).

Almost surely, 2^100020021121 is an apocalyptic number.

It is an amenable number.

100020021121 is a deficient number, since it is larger than the sum of its proper divisors (244134079).

100020021121 is an equidigital number, since it uses as much as digits as its factorization.

100020021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37479.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 100020021121 its reverse (121120020001), we get a palindrome (221140041122).

The spelling of 100020021121 in words is "one hundred billion, twenty million, twenty-one thousand, one hundred twenty-one".