10121221102 has 4 divisors (see below), whose sum is σ = 15181831656. Its totient is φ = 5060610550.

The previous prime is 10121221049. The next prime is 10121221111. The reversal of 10121221102 is 20112212101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20112212101 = 19 ⋅1058537479.

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 as a sum of consecutive naturals, namely, 2530305274 + ... + 2530305277.

It is an arithmetic number, because the mean of its divisors is an integer number (3795457914).

Almost surely, 2^10121221102 is an apocalyptic number.

10121221102 is a deficient number, since it is larger than the sum of its proper divisors (5060610554).

10121221102 is an equidigital number, since it uses as much as digits as its factorization.

10121221102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5060610553.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 10121221102 its reverse (20112212101), we get a palindrome (30233433203).

Subtracting 10121221102 from its reverse (20112212101), we obtain a palindrome (9990990999).

The spelling of 10121221102 in words is "ten billion, one hundred twenty-one million, two hundred twenty-one thousand, one hundred two".