30211222201220 has 96 divisors (see below), whose sum is σ = 68154607180800. Its totient is φ = 11214650772864.

The previous prime is 30211222201211. The next prime is 30211222201231. The reversal of 30211222201220 is 2210222211203.

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 = 30211222201192 and 30211222201201.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3964097 + ... + 8725623.

It is an arithmetic number, because the mean of its divisors is an integer number (709943824800).

Almost surely, 2^{30211222201220} 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 30211222201220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34077303590400).

30211222201220 is an abundant number, since it is smaller than the sum of its proper divisors (37943384979580).

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

30211222201220 is a wasteful number, since it uses less digits than its factorization.

30211222201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4761897 (or 4761895 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 30211222201220 its reverse (2210222211203), we get a palindrome (32421444412423).

The spelling of 30211222201220 in words is "thirty trillion, two hundred eleven billion, two hundred twenty-two million, two hundred one thousand, two hundred twenty".