102110121 has 24 divisors (see below), whose sum is σ = 152231040. Its totient is φ = 65905056.

The previous prime is 102110111. The next prime is 102110167. The reversal of 102110121 is 121011201.

It is a happy number.

It is not a de Polignac number, because 102110121 - 2⁵ = 102110089 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (102110101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78946 + ... + 80228.

It is an arithmetic number, because the mean of its divisors is an integer number (6342960).

Almost surely, 2^102110121 is an apocalyptic number.

It is an amenable number.

102110121 is a deficient number, since it is larger than the sum of its proper divisors (50120919).

102110121 is a wasteful number, since it uses less digits than its factorization.

102110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1565 (or 1562 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 102110121 is about 10104.9552695695. The cubic root of 102110121 is about 467.4009566462.

Adding to 102110121 its reverse (121011201), we get a palindrome (223121322).

The spelling of 102110121 in words is "one hundred two million, one hundred ten thousand, one hundred twenty-one".