121535773 has 2 divisors, whose sum is σ = 121535774. Its totient is φ = 121535772.

The previous prime is 121535699. The next prime is 121535807. The reversal of 121535773 is 377535121.

It is an a-pointer prime, because the next prime (121535807) can be obtained adding 121535773 to its sum of digits (34).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114126489 + 7409284 = 10683^2 + 2722^2 .

It is an emirp because it is prime and its reverse (377535121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121535773 - 2²¹ = 119438621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121532773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60767886 + 60767887.

It is an arithmetic number, because the mean of its divisors is an integer number (60767887).

Almost surely, 2^121535773 is an apocalyptic number.

It is an amenable number.

121535773 is a deficient number, since it is larger than the sum of its proper divisors (1).

121535773 is an equidigital number, since it uses as much as digits as its factorization.

121535773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22050, while the sum is 34.

The square root of 121535773 is about 11024.3264193328. The cubic root of 121535773 is about 495.3376915534.

The spelling of 121535773 in words is "one hundred twenty-one million, five hundred thirty-five thousand, seven hundred seventy-three".