120021304228 has 18 divisors (see below), whose sum is σ = 244329084006. Its totient is φ = 51437701728.

The previous prime is 120021304213. The next prime is 120021304229. The reversal of 120021304228 is 822403120021.

It can be written as a sum of positive squares in only one way, i.e., 77251755364 + 42769548864 = 277942^2 + 206808^2 .

It is a super-2 number, since 2×120021304228² (a number of 23 digits) contains 22 as substring.

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

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 306176601 + ... + 306176992.

Almost surely, 2^120021304228 is an apocalyptic number.

It is an amenable number.

120021304228 is an abundant number, since it is smaller than the sum of its proper divisors (124307779778).

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

120021304228 is a wasteful number, since it uses less digits than its factorization.

120021304228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612353611 (or 612353602 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 120021304228 its reverse (822403120021), we get a palindrome (942424424249).

The spelling of 120021304228 in words is "one hundred twenty billion, twenty-one million, three hundred four thousand, two hundred twenty-eight".