102121120110123 has 6 divisors (see below), whose sum is σ = 147508284603524. Its totient is φ = 68080746740076.

The previous prime is 102121120110089. The next prime is 102121120110197. The reversal of 102121120110123 is 321011021121201.

It is a happy number.

It is not a de Polignac number, because 102121120110123 - 2¹⁸ = 102121119847979 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102121120110096 and 102121120110105.

It is not an unprimeable number, because it can be changed into a prime (102121120110223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5673395561665 + ... + 5673395561682.

Almost surely, 2^{102121120110123} is an apocalyptic number.

102121120110123 is a deficient number, since it is larger than the sum of its proper divisors (45387164493401).

102121120110123 is a wasteful number, since it uses less digits than its factorization.

102121120110123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11346791123353 (or 11346791123350 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 102121120110123 its reverse (321011021121201), we get a palindrome (423132141231324).

The spelling of 102121120110123 in words is "one hundred two trillion, one hundred twenty-one billion, one hundred twenty million, one hundred ten thousand, one hundred twenty-three".