1201100111201 has 2 divisors, whose sum is σ = 1201100111202. Its totient is φ = 1201100111200.

The previous prime is 1201100111171. The next prime is 1201100111221. The reversal of 1201100111201 is 1021110011021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 714956493601 + 486143617600 = 845551^2 + 697240^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201100111201 - 2¹⁸ = 1201099849057 is a prime.

It is not a weakly prime, because it can be changed into another prime (1201100111221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600550055600 + 600550055601.

It is an arithmetic number, because the mean of its divisors is an integer number (600550055601).

Almost surely, 2^{1201100111201} is an apocalyptic number.

It is an amenable number.

1201100111201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201100111201 is an equidigital number, since it uses as much as digits as its factorization.

1201100111201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1201100111201 its reverse (1021110011021), we get a palindrome (2222210122222).

The spelling of 1201100111201 in words is "one trillion, two hundred one billion, one hundred million, one hundred eleven thousand, two hundred one".