120315621 has 8 divisors (see below), whose sum is σ = 161252800. Its totient is φ = 79794432.

The previous prime is 120315589. The next prime is 120315623. The reversal of 120315621 is 126513021.

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

It is not a de Polignac number, because 120315621 - 2⁵ = 120315589 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 (120315623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103321 + ... + 104478.

It is an arithmetic number, because the mean of its divisors is an integer number (20156600).

Almost surely, 2^120315621 is an apocalyptic number.

It is an amenable number.

120315621 is a deficient number, since it is larger than the sum of its proper divisors (40937179).

120315621 is a wasteful number, since it uses less digits than its factorization.

120315621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207995.

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

The square root of 120315621 is about 10968.8477517012. The cubic root of 120315621 is about 493.6744742461.

Adding to 120315621 its reverse (126513021), we get a palindrome (246828642).

The spelling of 120315621 in words is "one hundred twenty million, three hundred fifteen thousand, six hundred twenty-one".