20221301077 has 2 divisors, whose sum is σ = 20221301078. Its totient is φ = 20221301076.

The previous prime is 20221301029. The next prime is 20221301081. The reversal of 20221301077 is 77010312202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18061747236 + 2159553841 = 134394^2 + 46471^2 .

It is a cyclic number.

It is not a de Polignac number, because 20221301077 - 2⁷ = 20221300949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20221301017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110650538 + 10110650539.

It is an arithmetic number, because the mean of its divisors is an integer number (10110650539).

Almost surely, 2^20221301077 is an apocalyptic number.

It is an amenable number.

20221301077 is a deficient number, since it is larger than the sum of its proper divisors (1).

20221301077 is an equidigital number, since it uses as much as digits as its factorization.

20221301077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1176, while the sum is 25.

Adding to 20221301077 its reverse (77010312202), we get a palindrome (97231613279).

The spelling of 20221301077 in words is "twenty billion, two hundred twenty-one million, three hundred one thousand, seventy-seven".