121500606 has 8 divisors (see below), whose sum is σ = 243001224. Its totient is φ = 40500200.

The previous prime is 121500601. The next prime is 121500607. The reversal of 121500606 is 606005121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

121500606 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121500601) 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, 10125045 + ... + 10125056.

It is an arithmetic number, because the mean of its divisors is an integer number (30375153).

Almost surely, 2^121500606 is an apocalyptic number.

121500606 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.

121500606 is a wasteful number, since it uses less digits than its factorization.

121500606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20250106.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 121500606 is about 11022.7313312083. The cubic root of 121500606 is about 495.2899107764.

Adding to 121500606 its reverse (606005121), we get a palindrome (727505727).

The spelling of 121500606 in words is "one hundred twenty-one million, five hundred thousand, six hundred six".