11221002077 has 2 divisors, whose sum is σ = 11221002078. Its totient is φ = 11221002076.

The previous prime is 11221002073. The next prime is 11221002109. The reversal of 11221002077 is 77020012211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11166994276 + 54007801 = 105674^2 + 7349^2 .

It is a cyclic number.

It is not a de Polignac number, because 11221002077 - 2² = 11221002073 is a prime.

It is a super-2 number, since 2×11221002077² (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 (11221002071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610501038 + 5610501039.

It is an arithmetic number, because the mean of its divisors is an integer number (5610501039).

Almost surely, 2^11221002077 is an apocalyptic number.

It is an amenable number.

11221002077 is a deficient number, since it is larger than the sum of its proper divisors (1).

11221002077 is an equidigital number, since it uses as much as digits as its factorization.

11221002077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 392, while the sum is 23.

Adding to 11221002077 its reverse (77020012211), we get a palindrome (88241014288).

The spelling of 11221002077 in words is "eleven billion, two hundred twenty-one million, two thousand, seventy-seven".