202013220077 has 2 divisors, whose sum is σ = 202013220078. Its totient is φ = 202013220076.

The previous prime is 202013219963. The next prime is 202013220127. The reversal of 202013220077 is 770022310202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113430198436 + 88583021641 = 336794^2 + 297629^2 .

It is a cyclic number.

It is not a de Polignac number, because 202013220077 - 2¹⁸ = 202012957933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202013223077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101006610038 + 101006610039.

It is an arithmetic number, because the mean of its divisors is an integer number (101006610039).

Almost surely, 2^202013220077 is an apocalyptic number.

It is an amenable number.

202013220077 is a deficient number, since it is larger than the sum of its proper divisors (1).

202013220077 is an equidigital number, since it uses as much as digits as its factorization.

202013220077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 26.

Adding to 202013220077 its reverse (770022310202), we get a palindrome (972035530279).

The spelling of 202013220077 in words is "two hundred two billion, thirteen million, two hundred twenty thousand, seventy-seven".