30221031210320 has 20 divisors (see below), whose sum is σ = 70263897564180. Its totient is φ = 12088412484096.

The previous prime is 30221031210283. The next prime is 30221031210371. The reversal of 30221031210320 is 2301213012203.

It can be written as a sum of positive squares in 2 ways, for example, as 23418553489984 + 6802477720336 = 4839272^2 + 2608156^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 30221031210292 and 30221031210301.

It is a congruent number.

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, 188881444985 + ... + 188881445144.

It is an arithmetic number, because the mean of its divisors is an integer number (3513194878209).

Almost surely, 2^{30221031210320} is an apocalyptic number.

It is an amenable number.

30221031210320 is an abundant number, since it is smaller than the sum of its proper divisors (40042866353860).

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

30221031210320 is a wasteful number, since it uses less digits than its factorization.

30221031210320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377762890142 (or 377762890136 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 30221031210320 its reverse (2301213012203), we get a palindrome (32522244222523).

The spelling of 30221031210320 in words is "thirty trillion, two hundred twenty-one billion, thirty-one million, two hundred ten thousand, three hundred twenty".