121087773 has 12 divisors (see below), whose sum is σ = 176510620. Its totient is φ = 79983936.

The previous prime is 121087751. The next prime is 121087783. The reversal of 121087773 is 377780121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 80676324 + 40411449 = 8982^2 + 6357^2 .

It is not a de Polignac number, because 121087773 - 2⁸ = 121087517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121087783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60736 + ... + 62697.

Almost surely, 2^121087773 is an apocalyptic number.

It is an amenable number.

121087773 is a deficient number, since it is larger than the sum of its proper divisors (55422847).

121087773 is a wasteful number, since it uses less digits than its factorization.

121087773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123548 (or 123545 counting only the distinct ones).

The product of its (nonzero) digits is 16464, while the sum is 36.

The square root of 121087773 is about 11003.9889585550. The cubic root of 121087773 is about 494.7283112677.

It can be divided in two parts, 12108 and 7773, that added together give a square (19881 = 141²).

The spelling of 121087773 in words is "one hundred twenty-one million, eighty-seven thousand, seven hundred seventy-three".