121604412 has 12 divisors (see below), whose sum is σ = 283743656. Its totient is φ = 40534800.

The previous prime is 121604411. The next prime is 121604423. The reversal of 121604412 is 214406121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121604411) 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, 5066839 + ... + 5066862.

Almost surely, 2^121604412 is an apocalyptic number.

121604412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121604412 is an abundant number, since it is smaller than the sum of its proper divisors (162139244).

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

121604412 is a wasteful number, since it uses less digits than its factorization.

121604412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10133708 (or 10133706 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 121604412 is about 11027.4390499336. The cubic root of 121604412 is about 495.4309235965.

The spelling of 121604412 in words is "one hundred twenty-one million, six hundred four thousand, four hundred twelve".