111211310101201 has 4 divisors (see below), whose sum is σ = 111211336276900. Its totient is φ = 111211283925504.

The previous prime is 111211310101183. The next prime is 111211310101291. The reversal of 111211310101201 is 102101013112111.

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 20211138662400 + 91000171438801 = 4495680^2 + 9539401^2 .

It is a cyclic number.

It is not a de Polignac number, because 111211310101201 - 2¹⁷ = 111211309970129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111211310101291) 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, 5082816 + ... + 15756193.

It is an arithmetic number, because the mean of its divisors is an integer number (27802834069225).

Almost surely, 2^{111211310101201} is an apocalyptic number.

It is an amenable number.

111211310101201 is a deficient number, since it is larger than the sum of its proper divisors (26175699).

111211310101201 is an equidigital number, since it uses as much as digits as its factorization.

111211310101201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26175698.

The product of its (nonzero) digits is 12, while the sum is 16.

Adding to 111211310101201 its reverse (102101013112111), we get a palindrome (213312323213312).

The spelling of 111211310101201 in words is "one hundred eleven trillion, two hundred eleven billion, three hundred ten million, one hundred one thousand, two hundred one".