1211101000133 has 2 divisors, whose sum is σ = 1211101000134. Its totient is φ = 1211101000132.

The previous prime is 1211101000093. The next prime is 1211101000139. The reversal of 1211101000133 is 3310001011121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 993406903204 + 217694096929 = 996698^2 + 466577^2 .

It is a cyclic number.

It is not a de Polignac number, because 1211101000133 - 2⁸ = 1211100999877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211101000139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605550500066 + 605550500067.

It is an arithmetic number, because the mean of its divisors is an integer number (605550500067).

Almost surely, 2^{1211101000133} is an apocalyptic number.

It is an amenable number.

1211101000133 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211101000133 is an equidigital number, since it uses as much as digits as its factorization.

1211101000133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 1211101000133 its reverse (3310001011121), we get a palindrome (4521102011254).

The spelling of 1211101000133 in words is "one trillion, two hundred eleven billion, one hundred one million, one hundred thirty-three", and thus it is an aban number.