102102110121 has 16 divisors (see below), whose sum is σ = 149681553408. Its totient is φ = 61392819600.

The previous prime is 102102110107. The next prime is 102102110153. The reversal of 102102110121 is 121011201201.

It is not a de Polignac number, because 102102110121 - 2¹⁸ = 102101847977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102102110097 and 102102110106.

It is not an unprimeable number, because it can be changed into a prime (102102110521) 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, 12176925 + ... + 12185306.

It is an arithmetic number, because the mean of its divisors is an integer number (9355097088).

Almost surely, 2^102102110121 is an apocalyptic number.

102102110121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102102110121 is a deficient number, since it is larger than the sum of its proper divisors (47579443287).

102102110121 is a wasteful number, since it uses less digits than its factorization.

102102110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24362372.

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

Adding to 102102110121 its reverse (121011201201), we get a palindrome (223113311322).

The spelling of 102102110121 in words is "one hundred two billion, one hundred two million, one hundred ten thousand, one hundred twenty-one".