20220220221077 has 2 divisors, whose sum is σ = 20220220221078. Its totient is φ = 20220220221076.

The previous prime is 20220220221001. The next prime is 20220220221107. The reversal of 20220220221077 is 77012202202202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15675312150436 + 4544908070641 = 3959206^2 + 2131879^2 .

It is a cyclic number.

It is not a de Polignac number, because 20220220221077 - 2¹⁴ = 20220220204693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20220220224077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110110110538 + 10110110110539.

It is an arithmetic number, because the mean of its divisors is an integer number (10110110110539).

Almost surely, 2^{20220220221077} is an apocalyptic number.

It is an amenable number.

20220220221077 is a deficient number, since it is larger than the sum of its proper divisors (1).

20220220221077 is an equidigital number, since it uses as much as digits as its factorization.

20220220221077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6272, while the sum is 29.

Adding to 20220220221077 its reverse (77012202202202), we get a palindrome (97232422423279).

The spelling of 20220220221077 in words is "twenty trillion, two hundred twenty billion, two hundred twenty million, two hundred twenty-one thousand, seventy-seven".