121001100049 has 2 divisors, whose sum is σ = 121001100050. Its totient is φ = 121001100048.

The previous prime is 121001100001. The next prime is 121001100089. The reversal of 121001100049 is 940001100121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115165209600 + 5835890449 = 339360^2 + 76393^2 .

It is an emirp because it is prime and its reverse (940001100121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121001100049 - 2²⁵ = 120967545617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121001099999 and 121001100035.

It is not a weakly prime, because it can be changed into another prime (121001100089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60500550024 + 60500550025.

It is an arithmetic number, because the mean of its divisors is an integer number (60500550025).

Almost surely, 2^121001100049 is an apocalyptic number.

It is an amenable number.

121001100049 is a deficient number, since it is larger than the sum of its proper divisors (1).

121001100049 is an equidigital number, since it uses as much as digits as its factorization.

121001100049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 121001100049 its product of nonzero digits (72), we get a palindrome (121001100121).

The spelling of 121001100049 in words is "one hundred twenty-one billion, one million, one hundred thousand, forty-nine".