30561221212052 has 12 divisors (see below), whose sum is σ = 53482395142260. Its totient is φ = 15280536885696.

The previous prime is 30561221212033. The next prime is 30561221212111. The reversal of 30561221212052 is 25021212216503.

It can be written as a sum of positive squares in 2 ways, for example, as 3517102655236 + 27044118556816 = 1875394^2 + 5200396^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17492027 + ... + 19159682.

It is an arithmetic number, because the mean of its divisors is an integer number (4456866261855).

Almost surely, 2^{30561221212052} is an apocalyptic number.

It is an amenable number.

30561221212052 is a deficient number, since it is larger than the sum of its proper divisors (22921173930208).

30561221212052 is a wasteful number, since it uses less digits than its factorization.

30561221212052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36860170 (or 36860168 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

Adding to 30561221212052 its reverse (25021212216503), we get a palindrome (55582433428555).

The spelling of 30561221212052 in words is "thirty trillion, five hundred sixty-one billion, two hundred twenty-one million, two hundred twelve thousand, fifty-two".