100221021121021 has 16 divisors (see below), whose sum is σ = 102629723291200. Its totient is φ = 97837474924800.

The previous prime is 100221021121009. The next prime is 100221021121049. The reversal of 100221021121021 is 120121120122001.

It is a cyclic number.

It is not a de Polignac number, because 100221021121021 - 2⁴¹ = 98021997865469 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100221021120986 and 100221021121004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100221021122021) 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, 24569350 + ... + 28356568.

It is an arithmetic number, because the mean of its divisors is an integer number (6414357705700).

Almost surely, 2^{100221021121021} is an apocalyptic number.

It is an amenable number.

100221021121021 is a deficient number, since it is larger than the sum of its proper divisors (2408702170179).

100221021121021 is a wasteful number, since it uses less digits than its factorization.

100221021121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3790540.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 100221021121021 its reverse (120121120122001), we get a palindrome (220342141243022).

The spelling of 100221021121021 in words is "one hundred trillion, two hundred twenty-one billion, twenty-one million, one hundred twenty-one thousand, twenty-one".