1221102102110 has 192 divisors, whose sum is σ = 2574390772800. Its totient is φ = 415527045120.

The previous prime is 1221102102107. The next prime is 1221102102127. The reversal of 1221102102110 is 112012011221.

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 95 ways as a sum of consecutive naturals, for example, 721264424 + ... + 721266116.

It is an arithmetic number, because the mean of its divisors is an integer number (13408285275).

Almost surely, 2^{1221102102110} is an apocalyptic number.

1221102102110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221102102110 is an abundant number, since it is smaller than the sum of its proper divisors (1353288670690).

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

1221102102110 is a wasteful number, since it uses less digits than its factorization.

1221102102110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2107 (or 2096 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1221102102110 its reverse (112012011221), we get a palindrome (1333114113331).

The spelling of 1221102102110 in words is "one trillion, two hundred twenty-one billion, one hundred two million, one hundred two thousand, one hundred ten".