10001221120101 has 16 divisors (see below), whose sum is σ = 13425103013888. Its totient is φ = 6622422030000.

The previous prime is 10001221120049. The next prime is 10001221120109. The reversal of 10001221120101 is 10102112210001.

It is not a de Polignac number, because 10001221120101 - 2¹⁰ = 10001221119077 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 (10001221120109) 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, 1828320 + ... + 4831686.

It is an arithmetic number, because the mean of its divisors is an integer number (839068938368).

Almost surely, 2^{10001221120101} is an apocalyptic number.

It is an amenable number.

10001221120101 is a deficient number, since it is larger than the sum of its proper divisors (3423881893787).

10001221120101 is a wasteful number, since it uses less digits than its factorization.

10001221120101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3010872.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 10001221120101 its reverse (10102112210001), we get a palindrome (20103333330102).

The spelling of 10001221120101 in words is "ten trillion, one billion, two hundred twenty-one million, one hundred twenty thousand, one hundred one".