121774772 has 24 divisors (see below), whose sum is σ = 244030080. Its totient is φ = 52086240.

The previous prime is 121774769. The next prime is 121774777. The reversal of 121774772 is 277477121.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121774777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11129 + ... + 19167.

It is an arithmetic number, because the mean of its divisors is an integer number (10167920).

Almost surely, 2^121774772 is an apocalyptic number.

It is an amenable number.

121774772 is an abundant number, since it is smaller than the sum of its proper divisors (122255308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121774772 is a wasteful number, since it uses less digits than its factorization.

121774772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8591 (or 8589 counting only the distinct ones).

The product of its digits is 38416, while the sum is 38.

The square root of 121774772 is about 11035.1607147336. The cubic root of 121774772 is about 495.6621713165.

The spelling of 121774772 in words is "one hundred twenty-one million, seven hundred seventy-four thousand, seven hundred seventy-two".