102121012110 has 64 divisors (see below), whose sum is σ = 264149605440. Its totient is φ = 25117854720.

The previous prime is 102121012067. The next prime is 102121012121. The reversal of 102121012110 is 11210121201.

It is a super-2 number, since 2×102121012110² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 401140 + ... + 604280.

It is an arithmetic number, because the mean of its divisors is an integer number (4127337585).

Almost surely, 2^102121012110 is an apocalyptic number.

102121012110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102121012110 is an abundant number, since it is smaller than the sum of its proper divisors (162028593330).

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

102121012110 is a wasteful number, since it uses less digits than its factorization.

102121012110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204453.

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

Adding to 102121012110 its reverse (11210121201), we get a palindrome (113331133311).

The spelling of 102121012110 in words is "one hundred two billion, one hundred twenty-one million, twelve thousand, one hundred ten".