121521468 has 24 divisors (see below), whose sum is σ = 291214672. Its totient is φ = 39412224.

The previous prime is 121521437. The next prime is 121521487. The reversal of 121521468 is 864125121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136405 + ... + 137292.

Almost surely, 2^121521468 is an apocalyptic number.

It is an amenable number.

121521468 is an abundant number, since it is smaller than the sum of its proper divisors (169693204).

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

121521468 is a wasteful number, since it uses less digits than its factorization.

121521468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273741 (or 273739 counting only the distinct ones).

The product of its digits is 3840, while the sum is 30.

The square root of 121521468 is about 11023.6776077677. The cubic root of 121521468 is about 495.3182567168.

Adding to 121521468 its reverse (864125121), we get a palindrome (985646589).

The spelling of 121521468 in words is "one hundred twenty-one million, five hundred twenty-one thousand, four hundred sixty-eight".