201122121111077 has 2 divisors, whose sum is σ = 201122121111078. Its totient is φ = 201122121111076.

The previous prime is 201122121111059. The next prime is 201122121111139. The reversal of 201122121111077 is 770111121221102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194966318485156 + 6155802625921 = 13963034^2 + 2481089^2 .

It is a cyclic number.

It is not a de Polignac number, because 201122121111077 - 2⁸ = 201122121110821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201122121111007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100561060555538 + 100561060555539.

It is an arithmetic number, because the mean of its divisors is an integer number (100561060555539).

Almost surely, 2^{201122121111077} is an apocalyptic number.

It is an amenable number.

201122121111077 is a deficient number, since it is larger than the sum of its proper divisors (1).

201122121111077 is an equidigital number, since it uses as much as digits as its factorization.

201122121111077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 784, while the sum is 29.

Adding to 201122121111077 its reverse (770111121221102), we get a palindrome (971233242332179).

The spelling of 201122121111077 in words is "two hundred one trillion, one hundred twenty-two billion, one hundred twenty-one million, one hundred eleven thousand, seventy-seven".