102120110121 has 16 divisors (see below), whose sum is σ = 136842982848. Its totient is φ = 67739481600.

The previous prime is 102120110093. The next prime is 102120110129. The reversal of 102120110121 is 121011021201.

It is not a de Polignac number, because 102120110121 - 2¹³ = 102120101929 is a prime.

It is a super-2 number, since 2×102120110121² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102120110097 and 102120110106.

It is not an unprimeable number, because it can be changed into a prime (102120110129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 393541 + ... + 599261.

It is an arithmetic number, because the mean of its divisors is an integer number (8552686428).

Almost surely, 2^102120110121 is an apocalyptic number.

It is an amenable number.

102120110121 is a deficient number, since it is larger than the sum of its proper divisors (34722872727).

102120110121 is a wasteful number, since it uses less digits than its factorization.

102120110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206552.

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

Adding to 102120110121 its reverse (121011021201), we get a palindrome (223131131322).

The spelling of 102120110121 in words is "one hundred two billion, one hundred twenty million, one hundred ten thousand, one hundred twenty-one".