100111201222001 has 4 divisors (see below), whose sum is σ = 100111238501604. Its totient is φ = 100111163942400.

The previous prime is 100111201221991. The next prime is 100111201222033. The reversal of 100111201222001 is 100222102111001.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5701703454976 + 94409497767025 = 2387824^2 + 9716455^2 .

It is a cyclic number.

It is not a de Polignac number, because 100111201222001 - 2³⁴ = 100094021352817 is a prime.

It is a super-2 number, since 2×100111201222001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100111201222601) 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, 14270240 + ... + 20096321.

It is an arithmetic number, because the mean of its divisors is an integer number (25027809625401).

Almost surely, 2^{100111201222001} is an apocalyptic number.

It is an amenable number.

100111201222001 is a deficient number, since it is larger than the sum of its proper divisors (37279603).

100111201222001 is an equidigital number, since it uses as much as digits as its factorization.

100111201222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37279602.

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

Adding to 100111201222001 its reverse (100222102111001), we get a palindrome (200333303333002).

The spelling of 100111201222001 in words is "one hundred trillion, one hundred eleven billion, two hundred one million, two hundred twenty-two thousand, one".