10201111020077 has 2 divisors, whose sum is σ = 10201111020078. Its totient is φ = 10201111020076.

The previous prime is 10201111020041. The next prime is 10201111020103. The reversal of 10201111020077 is 77002011110201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8649357478441 + 1551753541636 = 2940979^2 + 1245694^2 .

It is an emirp because it is prime and its reverse (77002011110201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10201111020077 - 2²⁶ = 10201043911213 is a prime.

It is a super-2 number, since 2×10201111020077² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10201111020007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5100555510038 + 5100555510039.

It is an arithmetic number, because the mean of its divisors is an integer number (5100555510039).

Almost surely, 2^{10201111020077} is an apocalyptic number.

It is an amenable number.

10201111020077 is a deficient number, since it is larger than the sum of its proper divisors (1).

10201111020077 is an equidigital number, since it uses as much as digits as its factorization.

10201111020077 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 10201111020077 its reverse (77002011110201), we get a palindrome (87203122130278).

The spelling of 10201111020077 in words is "ten trillion, two hundred one billion, one hundred eleven million, twenty thousand, seventy-seven".