20002201220077 has 2 divisors, whose sum is σ = 20002201220078. Its totient is φ = 20002201220076.

The previous prime is 20002201219919. The next prime is 20002201220119. The reversal of 20002201220077 is 77002210220002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19999553191396 + 2648028681 = 4472086^2 + 51459^2 .

It is a cyclic number.

It is not a de Polignac number, because 20002201220077 - 2³⁹ = 19452445406189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20002201224077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001100610038 + 10001100610039.

It is an arithmetic number, because the mean of its divisors is an integer number (10001100610039).

Almost surely, 2^{20002201220077} is an apocalyptic number.

It is an amenable number.

20002201220077 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002201220077 is an equidigital number, since it uses as much as digits as its factorization.

20002201220077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1568, while the sum is 25.

Adding to 20002201220077 its reverse (77002210220002), we get a palindrome (97004411440079).

The spelling of 20002201220077 in words is "twenty trillion, two billion, two hundred one million, two hundred twenty thousand, seventy-seven".