100111211020201 has 4 divisors (see below), whose sum is σ = 100111231104004. Its totient is φ = 100111190936400.

The previous prime is 100111211020193. The next prime is 100111211020231. The reversal of 100111211020201 is 102020112111001.

It is a happy number.

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 76624112390400 + 23487098629801 = 8753520^2 + 4846349^2 .

It is a cyclic number.

It is not a de Polignac number, because 100111211020201 - 2³ = 100111211020193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100111211020231) 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, 3740611 + ... + 14636071.

It is an arithmetic number, because the mean of its divisors is an integer number (25027807776001).

Almost surely, 2^{100111211020201} is an apocalyptic number.

It is an amenable number.

100111211020201 is a deficient number, since it is larger than the sum of its proper divisors (20083803).

100111211020201 is an equidigital number, since it uses as much as digits as its factorization.

100111211020201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20083802.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 100111211020201 its reverse (102020112111001), we get a palindrome (202131323131202).

The spelling of 100111211020201 in words is "one hundred trillion, one hundred eleven billion, two hundred eleven million, twenty thousand, two hundred one".