30302001220 has 24 divisors (see below), whose sum is σ = 67377391704. Its totient is φ = 11407812096.

The previous prime is 30302001181. The next prime is 30302001227. The reversal of 30302001220 is 2210020303.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 16646676484 + 13655324736 = 129022^2 + 116856^2 .

It is a super-2 number, since 2×30302001220² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30302001220.

It is not an unprimeable number, because it can be changed into a prime (30302001227) 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, 44561427 + ... + 44562106.

It is an arithmetic number, because the mean of its divisors is an integer number (2807391321).

Almost surely, 2^30302001220 is an apocalyptic number.

It is an amenable number.

30302001220 is an abundant number, since it is smaller than the sum of its proper divisors (37075390484).

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

30302001220 is a wasteful number, since it uses less digits than its factorization.

30302001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89123559 (or 89123557 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 30302001220 its reverse (2210020303), we get a palindrome (32512021523).

The spelling of 30302001220 in words is "thirty billion, three hundred two million, one thousand, two hundred twenty".