11219351761 has 2 divisors, whose sum is σ = 11219351762. Its totient is φ = 11219351760.

The previous prime is 11219351753. The next prime is 11219351783. The reversal of 11219351761 is 16715391211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10535790736 + 683561025 = 102644^2 + 26145^2 .

It is an emirp because it is prime and its reverse (16715391211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11219351761 - 2³ = 11219351753 is a prime.

It is a super-2 number, since 2×11219351761² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11219351761.

It is not a weakly prime, because it can be changed into another prime (11219351261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5609675880 + 5609675881.

It is an arithmetic number, because the mean of its divisors is an integer number (5609675881).

Almost surely, 2^11219351761 is an apocalyptic number.

It is an amenable number.

11219351761 is a deficient number, since it is larger than the sum of its proper divisors (1).

11219351761 is an equidigital number, since it uses as much as digits as its factorization.

11219351761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11340, while the sum is 37.

The spelling of 11219351761 in words is "eleven billion, two hundred nineteen million, three hundred fifty-one thousand, seven hundred sixty-one".