11213006261 has 2 divisors, whose sum is σ = 11213006262. Its totient is φ = 11213006260.

The previous prime is 11213006239. The next prime is 11213006269. The reversal of 11213006261 is 16260031211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11210786161 + 2220100 = 105881^2 + 1490^2 .

It is a cyclic number.

It is not a de Polignac number, because 11213006261 - 2³⁰ = 10139264437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11213006269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5606503130 + 5606503131.

It is an arithmetic number, because the mean of its divisors is an integer number (5606503131).

Almost surely, 2^11213006261 is an apocalyptic number.

It is an amenable number.

11213006261 is a deficient number, since it is larger than the sum of its proper divisors (1).

11213006261 is an equidigital number, since it uses as much as digits as its factorization.

11213006261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 11213006261 its reverse (16260031211), we get a palindrome (27473037472).

The spelling of 11213006261 in words is "eleven billion, two hundred thirteen million, six thousand, two hundred sixty-one".