11761223011 has 2 divisors, whose sum is σ = 11761223012. Its totient is φ = 11761223010.

The previous prime is 11761223009. The next prime is 11761223069. The reversal of 11761223011 is 11032216711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11761223011 - 2¹ = 11761223009 is a prime.

It is a super-2 number, since 2×11761223011² (a number of 21 digits) contains 22 as substring.

Together with 11761223009, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11761223711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5880611505 + 5880611506.

It is an arithmetic number, because the mean of its divisors is an integer number (5880611506).

Almost surely, 2^11761223011 is an apocalyptic number.

11761223011 is a deficient number, since it is larger than the sum of its proper divisors (1).

11761223011 is an equidigital number, since it uses as much as digits as its factorization.

11761223011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 25.

Adding to 11761223011 its reverse (11032216711), we get a palindrome (22793439722).

The spelling of 11761223011 in words is "eleven billion, seven hundred sixty-one million, two hundred twenty-three thousand, eleven".