201021000011077 has 2 divisors, whose sum is σ = 201021000011078. Its totient is φ = 201021000011076.

The previous prime is 201021000011057. The next prime is 201021000011203. The reversal of 201021000011077 is 770110000120102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148998910793121 + 52022089217956 = 12206511^2 + 7212634^2 .

It is a cyclic number.

It is not a de Polignac number, because 201021000011077 - 2³¹ = 201018852527429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201021000011057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100510500005538 + 100510500005539.

It is an arithmetic number, because the mean of its divisors is an integer number (100510500005539).

Almost surely, 2^{201021000011077} is an apocalyptic number.

It is an amenable number.

201021000011077 is a deficient number, since it is larger than the sum of its proper divisors (1).

201021000011077 is an equidigital number, since it uses as much as digits as its factorization.

201021000011077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 196, while the sum is 22.

Adding to 201021000011077 its reverse (770110000120102), we get a palindrome (971131000131179).

The spelling of 201021000011077 in words is "two hundred one trillion, twenty-one billion, eleven thousand, seventy-seven".