11112211277 has 2 divisors, whose sum is σ = 11112211278. Its totient is φ = 11112211276.

The previous prime is 11112211267. The next prime is 11112211291. The reversal of 11112211277 is 77211221111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9925339876 + 1186871401 = 99626^2 + 34451^2 .

It is a cyclic number.

It is not a de Polignac number, because 11112211277 - 2¹² = 11112207181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11112211267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5556105638 + 5556105639.

It is an arithmetic number, because the mean of its divisors is an integer number (5556105639).

Almost surely, 2^11112211277 is an apocalyptic number.

It is an amenable number.

11112211277 is a deficient number, since it is larger than the sum of its proper divisors (1).

11112211277 is an equidigital number, since it uses as much as digits as its factorization.

11112211277 is an evil number, because the sum of its binary digits is even.

The product of its digits is 392, while the sum is 26.

Adding to 11112211277 its reverse (77211221111), we get a palindrome (88323432388).

The spelling of 11112211277 in words is "eleven billion, one hundred twelve million, two hundred eleven thousand, two hundred seventy-seven".