10231120777 has 2 divisors, whose sum is σ = 10231120778. Its totient is φ = 10231120776.

The previous prime is 10231120759. The next prime is 10231120789. The reversal of 10231120777 is 77702113201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10231120201 + 576 = 101149^2 + 24^2 .

It is a cyclic number.

It is not a de Polignac number, because 10231120777 - 2¹⁵ = 10231088009 is a prime.

It is a super-2 number, since 2×10231120777² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10231120717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5115560388 + 5115560389.

It is an arithmetic number, because the mean of its divisors is an integer number (5115560389).

Almost surely, 2^10231120777 is an apocalyptic number.

It is an amenable number.

10231120777 is a deficient number, since it is larger than the sum of its proper divisors (1).

10231120777 is an equidigital number, since it uses as much as digits as its factorization.

10231120777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4116, while the sum is 31.

Adding to 10231120777 its reverse (77702113201), we get a palindrome (87933233978).

The spelling of 10231120777 in words is "ten billion, two hundred thirty-one million, one hundred twenty thousand, seven hundred seventy-seven".