30221201212120 has 256 divisors, whose sum is σ = 77571058752000. Its totient is φ = 10524978487296.

The previous prime is 30221201212099. The next prime is 30221201212127. The reversal of 30221201212120 is 2121210212203.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30221201212127) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3210576534 + ... + 3210585946.

It is an arithmetic number, because the mean of its divisors is an integer number (303011948250).

Almost surely, 2^{30221201212120} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30221201212120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38785529376000).

30221201212120 is an abundant number, since it is smaller than the sum of its proper divisors (47349857539880).

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

30221201212120 is a wasteful number, since it uses less digits than its factorization.

30221201212120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15282 (or 15278 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 30221201212120 its reverse (2121210212203), we get a palindrome (32342411424323).

The spelling of 30221201212120 in words is "thirty trillion, two hundred twenty-one billion, two hundred one million, two hundred twelve thousand, one hundred twenty".