10211221102 has 4 divisors (see below), whose sum is σ = 15316831656. Its totient is φ = 5105610550.

The previous prime is 10211221057. The next prime is 10211221103. The reversal of 10211221102 is 20112211201.

10211221102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20112211201 = 937 ⋅21464473.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10211221103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2552805274 + ... + 2552805277.

It is an arithmetic number, because the mean of its divisors is an integer number (3829207914).

Almost surely, 2^10211221102 is an apocalyptic number.

10211221102 is a deficient number, since it is larger than the sum of its proper divisors (5105610554).

10211221102 is an equidigital number, since it uses as much as digits as its factorization.

10211221102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5105610553.

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

Adding to 10211221102 its reverse (20112211201), we get a palindrome (30323432303).

Subtracting 10211221102 from its reverse (20112211201), we obtain a palindrome (9900990099).

The spelling of 10211221102 in words is "ten billion, two hundred eleven million, two hundred twenty-one thousand, one hundred two".