11120143261 has 2 divisors, whose sum is σ = 11120143262. Its totient is φ = 11120143260.

The previous prime is 11120143259. The next prime is 11120143277. The reversal of 11120143261 is 16234102111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5595937636 + 5524205625 = 74806^2 + 74325^2 .

It is a cyclic number.

It is not a de Polignac number, because 11120143261 - 2¹ = 11120143259 is a prime.

It is a super-4 number, since 4×11120143261⁴ (a number of 41 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

Together with 11120143259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11120143231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5560071630 + 5560071631.

It is an arithmetic number, because the mean of its divisors is an integer number (5560071631).

Almost surely, 2^11120143261 is an apocalyptic number.

It is an amenable number.

11120143261 is a deficient number, since it is larger than the sum of its proper divisors (1).

11120143261 is an equidigital number, since it uses as much as digits as its factorization.

11120143261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 11120143261 its reverse (16234102111), we get a palindrome (27354245372).

The spelling of 11120143261 in words is "eleven billion, one hundred twenty million, one hundred forty-three thousand, two hundred sixty-one".