30021212112220 has 192 divisors, whose sum is σ = 82171968721920. Its totient is φ = 8964213608448.

The previous prime is 30021212112209. The next prime is 30021212112253. The reversal of 30021212112220 is 2221121212003.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5775219 + ... + 9664138.

It is an arithmetic number, because the mean of its divisors is an integer number (427979003760).

Almost surely, 2^{30021212112220} is an apocalyptic number.

It is an amenable number.

30021212112220 is an abundant number, since it is smaller than the sum of its proper divisors (52150756609700).

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

30021212112220 is a wasteful number, since it uses less digits than its factorization.

30021212112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15439452 (or 15439450 counting only the distinct ones).

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

Adding to 30021212112220 its reverse (2221121212003), we get a palindrome (32242333324223).

The spelling of 30021212112220 in words is "thirty trillion, twenty-one billion, two hundred twelve million, one hundred twelve thousand, two hundred twenty".