11112554261 has 2 divisors, whose sum is σ = 11112554262. Its totient is φ = 11112554260.

The previous prime is 11112554209. The next prime is 11112554287. The reversal of 11112554261 is 16245521111.

11112554261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10863892900 + 248661361 = 104230^2 + 15769^2 .

It is a cyclic number.

It is not a de Polignac number, because 11112554261 - 2²² = 11108359957 is a prime.

It is a super-2 number, since 2×11112554261² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11112554461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5556277130 + 5556277131.

It is an arithmetic number, because the mean of its divisors is an integer number (5556277131).

Almost surely, 2^11112554261 is an apocalyptic number.

It is an amenable number.

11112554261 is a deficient number, since it is larger than the sum of its proper divisors (1).

11112554261 is an equidigital number, since it uses as much as digits as its factorization.

11112554261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2400, while the sum is 29.

The spelling of 11112554261 in words is "eleven billion, one hundred twelve million, five hundred fifty-four thousand, two hundred sixty-one".