102110121021 has 8 divisors (see below), whose sum is σ = 138715636320. Its totient is φ = 66789009872.

The previous prime is 102110121007. The next prime is 102110121077. The reversal of 102110121021 is 120121011201.

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 102110121021 - 2¹⁰ = 102110119997 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 102110120988 and 102110121006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102110123021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321100851 + ... + 321101168.

It is an arithmetic number, because the mean of its divisors is an integer number (17339454540).

Almost surely, 2^102110121021 is an apocalyptic number.

It is an amenable number.

102110121021 is a deficient number, since it is larger than the sum of its proper divisors (36605515299).

102110121021 is an equidigital number, since it uses as much as digits as its factorization.

102110121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642202075.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 102110121021 its reverse (120121011201), we get a palindrome (222231132222).

The spelling of 102110121021 in words is "one hundred two billion, one hundred ten million, one hundred twenty-one thousand, twenty-one".