121223788 has 12 divisors (see below), whose sum is σ = 242447632. Its totient is φ = 51953040.

The previous prime is 121223783. The next prime is 121223789. The reversal of 121223788 is 887322121.

121223788 is an admirable number.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (121223783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2164683 + ... + 2164738.

Almost surely, 2^121223788 is an apocalyptic number.

It is an amenable number.

121223788 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

121223788 is a wasteful number, since it uses less digits than its factorization.

121223788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4329432 (or 4329430 counting only the distinct ones).

The product of its digits is 10752, while the sum is 34.

The square root of 121223788 is about 11010.1674828315. The cubic root of 121223788 is about 494.9134807803.

The spelling of 121223788 in words is "one hundred twenty-one million, two hundred twenty-three thousand, seven hundred eighty-eight".