12111012077 has 2 divisors, whose sum is σ = 12111012078. Its totient is φ = 12111012076.

The previous prime is 12111012059. The next prime is 12111012113. The reversal of 12111012077 is 77021011121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8621865316 + 3489146761 = 92854^2 + 59069^2 .

It is a cyclic number.

It is not a de Polignac number, because 12111012077 - 2²⁰ = 12109963501 is a prime.

It is a super-2 number, since 2×12111012077² (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 (12111012877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055506038 + 6055506039.

It is an arithmetic number, because the mean of its divisors is an integer number (6055506039).

Almost surely, 2^12111012077 is an apocalyptic number.

It is an amenable number.

12111012077 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111012077 is an equidigital number, since it uses as much as digits as its factorization.

12111012077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 196, while the sum is 23.

Adding to 12111012077 its reverse (77021011121), we get a palindrome (89132023198).

The spelling of 12111012077 in words is "twelve billion, one hundred eleven million, twelve thousand, seventy-seven".