121102049 has 2 divisors, whose sum is σ = 121102050. Its totient is φ = 121102048.

The previous prime is 121102039. The next prime is 121102129. The reversal of 121102049 is 940201121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80550625 + 40551424 = 8975^2 + 6368^2 .

It is an emirp because it is prime and its reverse (940201121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121102049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121102049.

It is not a weakly prime, because it can be changed into another prime (121102039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60551024 + 60551025.

It is an arithmetic number, because the mean of its divisors is an integer number (60551025).

Almost surely, 2^121102049 is an apocalyptic number.

It is an amenable number.

121102049 is a deficient number, since it is larger than the sum of its proper divisors (1).

121102049 is an equidigital number, since it uses as much as digits as its factorization.

121102049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 121102049 is about 11004.6376132974. The cubic root of 121102049 is about 494.7477529880.

The spelling of 121102049 in words is "one hundred twenty-one million, one hundred two thousand, forty-nine".