77111122141 has 2 divisors, whose sum is σ = 77111122142. Its totient is φ = 77111122140.

The previous prime is 77111122117. The next prime is 77111122169. The reversal of 77111122141 is 14122111177.

It is an a-pointer prime, because the next prime (77111122169) can be obtained adding 77111122141 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55925155225 + 21185966916 = 236485^2 + 145554^2 .

It is a cyclic number.

It is not a de Polignac number, because 77111122141 - 2⁷ = 77111122013 is a prime.

It is a super-2 number, since 2×77111122141² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77111122181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38555561070 + 38555561071.

It is an arithmetic number, because the mean of its divisors is an integer number (38555561071).

Almost surely, 2^77111122141 is an apocalyptic number.

It is an amenable number.

77111122141 is a deficient number, since it is larger than the sum of its proper divisors (1).

77111122141 is an equidigital number, since it uses as much as digits as its factorization.

77111122141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 784, while the sum is 28.

The spelling of 77111122141 in words is "seventy-seven billion, one hundred eleven million, one hundred twenty-two thousand, one hundred forty-one".