20200212221177 has 2 divisors, whose sum is σ = 20200212221178. Its totient is φ = 20200212221176.

The previous prime is 20200212221171. The next prime is 20200212221249. The reversal of 20200212221177 is 77112221200202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10169791158121 + 10030421063056 = 3189011^2 + 3167084^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20200212221177 is a prime.

It is not a weakly prime, because it can be changed into another prime (20200212221171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100106110588 + 10100106110589.

It is an arithmetic number, because the mean of its divisors is an integer number (10100106110589).

Almost surely, 2^{20200212221177} is an apocalyptic number.

It is an amenable number.

20200212221177 is a deficient number, since it is larger than the sum of its proper divisors (1).

20200212221177 is an equidigital number, since it uses as much as digits as its factorization.

20200212221177 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3136, while the sum is 29.

Adding to 20200212221177 its reverse (77112221200202), we get a palindrome (97312433421379).

The spelling of 20200212221177 in words is "twenty trillion, two hundred billion, two hundred twelve million, two hundred twenty-one thousand, one hundred seventy-seven".