121210049 has 2 divisors, whose sum is σ = 121210050. Its totient is φ = 121210048.

The previous prime is 121210027. The next prime is 121210081. The reversal of 121210049 is 940012121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88491649 + 32718400 = 9407^2 + 5720^2 .

It is a cyclic number.

It is not a de Polignac number, because 121210049 - 2²⁰ = 120161473 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121210049.

It is not a weakly prime, because it can be changed into another prime (121210949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60605024 + 60605025.

It is an arithmetic number, because the mean of its divisors is an integer number (60605025).

Almost surely, 2^121210049 is an apocalyptic number.

It is an amenable number.

121210049 is a deficient number, since it is larger than the sum of its proper divisors (1).

121210049 is an equidigital number, since it uses as much as digits as its factorization.

121210049 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 121210049 is about 11009.5435418549. The cubic root of 121210049 is about 494.8947829286.

The spelling of 121210049 in words is "one hundred twenty-one million, two hundred ten thousand, forty-nine".