1001201022077 has 2 divisors, whose sum is σ = 1001201022078. Its totient is φ = 1001201022076.

The previous prime is 1001201022047. The next prime is 1001201022139. The reversal of 1001201022077 is 7702201021001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 966483643801 + 34717378276 = 983099^2 + 186326^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001201022077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001201022047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500600511038 + 500600511039.

It is an arithmetic number, because the mean of its divisors is an integer number (500600511039).

Almost surely, 2^{1001201022077} is an apocalyptic number.

It is an amenable number.

1001201022077 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001201022077 is an equidigital number, since it uses as much as digits as its factorization.

1001201022077 is an evil number, because the sum of its binary digits is even.

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

Adding to 1001201022077 its reverse (7702201021001), we get a palindrome (8703402043078).

The spelling of 1001201022077 in words is "one trillion, one billion, two hundred one million, twenty-two thousand, seventy-seven".