120021304221 has 48 divisors (see below), whose sum is σ = 219138052224. Its totient is φ = 61596899712.

The previous prime is 120021304213. The next prime is 120021304229. The reversal of 120021304221 is 122403120021.

It is a happy number.

120021304221 is a `hidden beast` number, since 120 + 0 + 21 + 304 + 221 = 666.

It is an interprime number because it is at equal distance from previous prime (120021304213) and next prime (120021304229).

It is not a de Polignac number, because 120021304221 - 2³ = 120021304213 is a prime.

It is a super-2 number, since 2×120021304221² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 120021304194 and 120021304203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120021304229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1950051 + ... + 2010656.

It is an arithmetic number, because the mean of its divisors is an integer number (4565376088).

Almost surely, 2^120021304221 is an apocalyptic number.

It is an amenable number.

120021304221 is a deficient number, since it is larger than the sum of its proper divisors (99116748003).

120021304221 is a wasteful number, since it uses less digits than its factorization.

120021304221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3960770 (or 3960767 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 120021304221 its reverse (122403120021), we get a palindrome (242424424242).

The spelling of 120021304221 in words is "one hundred twenty billion, twenty-one million, three hundred four thousand, two hundred twenty-one".