20210001201077 has 2 divisors, whose sum is σ = 20210001201078. Its totient is φ = 20210001201076.

The previous prime is 20210001201011. The next prime is 20210001201113. The reversal of 20210001201077 is 77010210001202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14206197730321 + 6003803470756 = 3769111^2 + 2450266^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20210001201077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20210001201977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105000600538 + 10105000600539.

It is an arithmetic number, because the mean of its divisors is an integer number (10105000600539).

Almost surely, 2^{20210001201077} is an apocalyptic number.

It is an amenable number.

20210001201077 is a deficient number, since it is larger than the sum of its proper divisors (1).

20210001201077 is an equidigital number, since it uses as much as digits as its factorization.

20210001201077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 392, while the sum is 23.

Adding to 20210001201077 its reverse (77010210001202), we get a palindrome (97220211202279).

The spelling of 20210001201077 in words is "twenty trillion, two hundred ten billion, one million, two hundred one thousand, seventy-seven".