11222220077 has 2 divisors, whose sum is σ = 11222220078. Its totient is φ = 11222220076.

The previous prime is 11222220049. The next prime is 11222220143. The reversal of 11222220077 is 77002222211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5994785476 + 5227434601 = 77426^2 + 72301^2 .

It is a cyclic number.

It is not a de Polignac number, because 11222220077 - 2²⁴ = 11205442861 is a prime.

It is a zygodrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11222220017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5611110038 + 5611110039.

It is an arithmetic number, because the mean of its divisors is an integer number (5611110039).

Almost surely, 2^11222220077 is an apocalyptic number.

It is an amenable number.

11222220077 is a deficient number, since it is larger than the sum of its proper divisors (1).

11222220077 is an equidigital number, since it uses as much as digits as its factorization.

11222220077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1568, while the sum is 26.

Adding to 11222220077 its reverse (77002222211), we get a palindrome (88224442288).

The spelling of 11222220077 in words is "eleven billion, two hundred twenty-two million, two hundred twenty thousand, seventy-seven".