100021002021121 has 16 divisors (see below), whose sum is σ = 100331303304960. Its totient is φ = 99711021715200.

The previous prime is 100021002021089. The next prime is 100021002021137. The reversal of 100021002021121 is 121120200120001.

It is a cyclic number.

It is not a de Polignac number, because 100021002021121 - 2⁵ = 100021002021089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100021002025121) 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, 9438609595 + ... + 9438620191.

It is an arithmetic number, because the mean of its divisors is an integer number (6270706456560).

Almost surely, 2^{100021002021121} is an apocalyptic number.

It is an amenable number.

100021002021121 is a deficient number, since it is larger than the sum of its proper divisors (310301283839).

100021002021121 is a wasteful number, since it uses less digits than its factorization.

100021002021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23064.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 100021002021121 its reverse (121120200120001), we get a palindrome (221141202141122).

The spelling of 100021002021121 in words is "one hundred trillion, twenty-one billion, two million, twenty-one thousand, one hundred twenty-one".