10221121210111 has 16 divisors (see below), whose sum is σ = 12191967885888. Its totient is φ = 8386009632000.

The previous prime is 10221121210093. The next prime is 10221121210147. The reversal of 10221121210111 is 11101212112201.

It is not a de Polignac number, because 10221121210111 - 2¹⁹ = 10221120685823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221121210151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 335962740 + ... + 335993161.

It is an arithmetic number, because the mean of its divisors is an integer number (761997992868).

Almost surely, 2^{10221121210111} is an apocalyptic number.

10221121210111 is a deficient number, since it is larger than the sum of its proper divisors (1970846675777).

10221121210111 is an equidigital number, since it uses as much as digits as its factorization.

10221121210111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671956002.

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

Adding to 10221121210111 its reverse (11101212112201), we get a palindrome (21322333322312).

The spelling of 10221121210111 in words is "ten trillion, two hundred twenty-one billion, one hundred twenty-one million, two hundred ten thousand, one hundred eleven".