20002122111077 has 2 divisors, whose sum is σ = 20002122111078. Its totient is φ = 20002122111076.

The previous prime is 20002122111073. The next prime is 20002122111107. The reversal of 20002122111077 is 77011122120002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19752922469476 + 249199641601 = 4444426^2 + 499199^2 .

It is a cyclic number.

It is not a de Polignac number, because 20002122111077 - 2² = 20002122111073 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20002122111073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001061055538 + 10001061055539.

It is an arithmetic number, because the mean of its divisors is an integer number (10001061055539).

Almost surely, 2^{20002122111077} is an apocalyptic number.

It is an amenable number.

20002122111077 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002122111077 is an equidigital number, since it uses as much as digits as its factorization.

20002122111077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 784, while the sum is 26.

Adding to 20002122111077 its reverse (77011122120002), we get a palindrome (97013244231079).

The spelling of 20002122111077 in words is "twenty trillion, two billion, one hundred twenty-two million, one hundred eleven thousand, seventy-seven".