10001221122101 has 4 divisors (see below), whose sum is σ = 10910423042304. Its totient is φ = 9092019201900.

The previous prime is 10001221122091. The next prime is 10001221122157. The reversal of 10001221122101 is 10122112210001.

10001221122101 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10001221122101 - 2²⁶ = 10001154013237 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 (10001221122301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 454600960085 + ... + 454600960106.

It is an arithmetic number, because the mean of its divisors is an integer number (2727605760576).

Almost surely, 2^{10001221122101} is an apocalyptic number.

10001221122101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10001221122101 is a deficient number, since it is larger than the sum of its proper divisors (909201920203).

10001221122101 is an equidigital number, since it uses as much as digits as its factorization.

10001221122101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909201920202.

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

Adding to 10001221122101 its reverse (10122112210001), we get a palindrome (20123333332102).

The spelling of 10001221122101 in words is "ten trillion, one billion, two hundred twenty-one million, one hundred twenty-two thousand, one hundred one".