121533336 has 24 divisors (see below), whose sum is σ = 329152980. Its totient is φ = 40511088.

The previous prime is 121533319. The next prime is 121533341. The reversal of 121533336 is 633335121.

It is a happy number.

121533336 is a `hidden beast` number, since 121 + 533 + 3 + 3 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 843910 + ... + 844053.

Almost surely, 2^121533336 is an apocalyptic number.

It is an amenable number.

121533336 is an abundant number, since it is smaller than the sum of its proper divisors (207619644).

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

121533336 is a wasteful number, since it uses less digits than its factorization.

121533336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1687975 (or 1687968 counting only the distinct ones).

The product of its digits is 4860, while the sum is 27.

The square root of 121533336 is about 11024.2158904840. The cubic root of 121533336 is about 495.3343807422.

Adding to 121533336 its reverse (633335121), we get a palindrome (754868457).

The spelling of 121533336 in words is "one hundred twenty-one million, five hundred thirty-three thousand, three hundred thirty-six".