120621018 has 32 divisors (see below), whose sum is σ = 291924864. Its totient is φ = 32435712.

The previous prime is 120620989. The next prime is 120621019. The reversal of 120621018 is 810126021.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 120620985 and 120621003.

It is not an unprimeable number, because it can be changed into a prime (120621019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83755 + ... + 85182.

It is an arithmetic number, because the mean of its divisors is an integer number (9122652).

Almost surely, 2^120621018 is an apocalyptic number.

120621018 is an abundant number, since it is smaller than the sum of its proper divisors (171303846).

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

120621018 is a wasteful number, since it uses less digits than its factorization.

120621018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168966.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 120621018 is about 10982.7600356195. The cubic root of 120621018 is about 494.0918191098.

Adding to 120621018 its reverse (810126021), we get a palindrome (930747039).

The spelling of 120621018 in words is "one hundred twenty million, six hundred twenty-one thousand, eighteen".