121624621 has 8 divisors (see below), whose sum is σ = 127555200. Its totient is φ = 115747632.

The previous prime is 121624589. The next prime is 121624649. The reversal of 121624621 is 126426121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 121624621 - 2⁵ = 121624589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121624651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8710 + ... + 17863.

It is an arithmetic number, because the mean of its divisors is an integer number (15944400).

Almost surely, 2^121624621 is an apocalyptic number.

It is an amenable number.

121624621 is a deficient number, since it is larger than the sum of its proper divisors (5930579).

121624621 is a wasteful number, since it uses less digits than its factorization.

121624621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26795.

The product of its digits is 1152, while the sum is 25.

The square root of 121624621 is about 11028.3553170906. The cubic root of 121624621 is about 495.4583667043.

The spelling of 121624621 in words is "one hundred twenty-one million, six hundred twenty-four thousand, six hundred twenty-one".