10221121100111 has 4 divisors (see below), whose sum is σ = 10235912882424. Its totient is φ = 10206329317800.

The previous prime is 10221121100093. The next prime is 10221121100129. The reversal of 10221121100111 is 11100112112201.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (10221121100093) and next prime (10221121100129).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10221121100111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221121130111) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7395890120 + ... + 7395891501.

It is an arithmetic number, because the mean of its divisors is an integer number (2558978220606).

Almost surely, 2^{10221121100111} is an apocalyptic number.

10221121100111 is a deficient number, since it is larger than the sum of its proper divisors (14791782313).

10221121100111 is an equidigital number, since it uses as much as digits as its factorization.

10221121100111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14791782312.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 10221121100111 its reverse (11100112112201), we get a palindrome (21321233212312).

The spelling of 10221121100111 in words is "ten trillion, two hundred twenty-one billion, one hundred twenty-one million, one hundred thousand, one hundred eleven".