121644324 has 36 divisors (see below), whose sum is σ = 307826064. Its totient is φ = 40503792.

The previous prime is 121644317. The next prime is 121644337. The reversal of 121644324 is 423446121.

It is a happy number.

121644324 is a `hidden beast` number, since 1 + 216 + 443 + 2 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×121644324² = 29594683122833952, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58999 + ... + 61025.

It is an arithmetic number, because the mean of its divisors is an integer number (8550724).

Almost surely, 2^121644324 is an apocalyptic number.

It is an amenable number.

121644324 is an abundant number, since it is smaller than the sum of its proper divisors (186181740).

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

121644324 is a wasteful number, since it uses less digits than its factorization.

121644324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3704 (or 3699 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 121644324 is about 11029.2485691456. The cubic root of 121644324 is about 495.4851197554.

The spelling of 121644324 in words is "one hundred twenty-one million, six hundred forty-four thousand, three hundred twenty-four".