123102121110 has 16 divisors (see below), whose sum is σ = 295445090736. Its totient is φ = 32827232288.

The previous prime is 123102121081. The next prime is 123102121157. The reversal of 123102121110 is 11121201321.

It is a super-2 number, since 2×123102121110² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 123102121110.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2051701989 + ... + 2051702048.

It is an arithmetic number, because the mean of its divisors is an integer number (18465318171).

Almost surely, 2^123102121110 is an apocalyptic number.

123102121110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123102121110 is an abundant number, since it is smaller than the sum of its proper divisors (172342969626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123102121110 is a wasteful number, since it uses less digits than its factorization.

123102121110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4103404047.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 123102121110 its reverse (11121201321), we get a palindrome (134223322431).

The spelling of 123102121110 in words is "one hundred twenty-three billion, one hundred two million, one hundred twenty-one thousand, one hundred ten".