30561221331204 has 12 divisors (see below), whose sum is σ = 71309516439504. Its totient is φ = 10187073777064.

The previous prime is 30561221331079. The next prime is 30561221331227. The reversal of 30561221331204 is 40213312216503.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1273384222122 + ... + 1273384222145.

It is an arithmetic number, because the mean of its divisors is an integer number (5942459703292).

Almost surely, 2^{30561221331204} is an apocalyptic number.

It is an amenable number.

30561221331204 is an abundant number, since it is smaller than the sum of its proper divisors (40748295108300).

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

30561221331204 is a wasteful number, since it uses less digits than its factorization.

30561221331204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2546768444274 (or 2546768444272 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

Adding to 30561221331204 its reverse (40213312216503), we get a palindrome (70774533547707).

The spelling of 30561221331204 in words is "thirty trillion, five hundred sixty-one billion, two hundred twenty-one million, three hundred thirty-one thousand, two hundred four".