102121121110110 has 32 divisors (see below), whose sum is σ = 249108570843552. Its totient is φ = 26785867831680.

The previous prime is 102121121110069. The next prime is 102121121110163. The reversal of 102121121110110 is 11011121121201.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 102121121110110.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27901943829 + ... + 27901947488.

It is an arithmetic number, because the mean of its divisors is an integer number (7784642838861).

Almost surely, 2^{102121121110110} is an apocalyptic number.

102121121110110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102121121110110 is an abundant number, since it is smaller than the sum of its proper divisors (146987449733442).

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

102121121110110 is a wasteful number, since it uses less digits than its factorization.

102121121110110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55803891388.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 102121121110110 its reverse (11011121121201), we get a palindrome (113132242231311).

The spelling of 102121121110110 in words is "one hundred two trillion, one hundred twenty-one billion, one hundred twenty-one million, one hundred ten thousand, one hundred ten".