100030121977 has 2 divisors, whose sum is σ = 100030121978. Its totient is φ = 100030121976.

The previous prime is 100030121903. The next prime is 100030122011. The reversal of 100030121977 is 779121030001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88901770896 + 11128351081 = 298164^2 + 105491^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100030121977 is a prime.

It is not a weakly prime, because it can be changed into another prime (100030128977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50015060988 + 50015060989.

It is an arithmetic number, because the mean of its divisors is an integer number (50015060989).

Almost surely, 2^100030121977 is an apocalyptic number.

It is an amenable number.

100030121977 is a deficient number, since it is larger than the sum of its proper divisors (1).

100030121977 is an equidigital number, since it uses as much as digits as its factorization.

100030121977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2646, while the sum is 31.

Adding to 100030121977 its reverse (779121030001), we get a palindrome (879151151978).

The spelling of 100030121977 in words is "one hundred billion, thirty million, one hundred twenty-one thousand, nine hundred seventy-seven".