30221221200000 has 192 divisors, whose sum is σ = 100337480490240. Its totient is φ = 8058992000000.

The previous prime is 30221221199999. The next prime is 30221221200029. The reversal of 30221221200000 is 212212203.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11392176 + ... + 13792175.

It is an arithmetic number, because the mean of its divisors is an integer number (522591044220).

Almost surely, 2^{30221221200000} is an apocalyptic number.

30221221200000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30221221200000 is an abundant number, since it is smaller than the sum of its proper divisors (70116259290240).

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

30221221200000 is an frugal number, since it uses more digits than its factorization.

30221221200000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25184393 (or 25184361 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 30221221200000 its reverse (212212203), we get a palindrome (30221433412203).

The spelling of 30221221200000 in words is "thirty trillion, two hundred twenty-one billion, two hundred twenty-one million, two hundred thousand".