100121000221049 has 2 divisors, whose sum is σ = 100121000221050. Its totient is φ = 100121000221048.

The previous prime is 100121000221009. The next prime is 100121000221091. The reversal of 100121000221049 is 940122000121001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99473554691449 + 647445529600 = 9973643^2 + 804640^2 .

It is a cyclic number.

It is not a de Polignac number, because 100121000221049 - 2⁸ = 100121000220793 is a prime.

It is not a weakly prime, because it can be changed into another prime (100121000221009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50060500110524 + 50060500110525.

It is an arithmetic number, because the mean of its divisors is an integer number (50060500110525).

Almost surely, 2^{100121000221049} is an apocalyptic number.

It is an amenable number.

100121000221049 is a deficient number, since it is larger than the sum of its proper divisors (1).

100121000221049 is an equidigital number, since it uses as much as digits as its factorization.

100121000221049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 100121000221049 in words is "one hundred trillion, one hundred twenty-one billion, two hundred twenty-one thousand, forty-nine".