1211104201 has 2 divisors, whose sum is σ = 1211104202. Its totient is φ = 1211104200.

The previous prime is 1211104183. The next prime is 1211104273. The reversal of 1211104201 is 1024011121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1051056400 + 160047801 = 32420^2 + 12651^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211104201 is a prime.

It is not a weakly prime, because it can be changed into another prime (1211104501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605552100 + 605552101.

It is an arithmetic number, because the mean of its divisors is an integer number (605552101).

Almost surely, 2^1211104201 is an apocalyptic number.

It is an amenable number.

1211104201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211104201 is an equidigital number, since it uses as much as digits as its factorization.

1211104201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1211104201 is about 34800.9224159360. The cubic root of 1211104201 is about 1065.9262812068.

Adding to 1211104201 its reverse (1024011121), we get a palindrome (2235115322).

The spelling of 1211104201 in words is "one billion, two hundred eleven million, one hundred four thousand, two hundred one".