102221301977 has 2 divisors, whose sum is σ = 102221301978. Its totient is φ = 102221301976.

The previous prime is 102221301887. The next prime is 102221302103. The reversal of 102221301977 is 779103122201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101953128601 + 268173376 = 319301^2 + 16376^2 .

It is an emirp because it is prime and its reverse (779103122201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102221301977 - 2¹⁶ = 102221236441 is a prime.

It is not a weakly prime, because it can be changed into another prime (102221301277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51110650988 + 51110650989.

It is an arithmetic number, because the mean of its divisors is an integer number (51110650989).

Almost surely, 2^102221301977 is an apocalyptic number.

It is an amenable number.

102221301977 is a deficient number, since it is larger than the sum of its proper divisors (1).

102221301977 is an equidigital number, since it uses as much as digits as its factorization.

102221301977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 35.

The spelling of 102221301977 in words is "one hundred two billion, two hundred twenty-one million, three hundred one thousand, nine hundred seventy-seven".