30212222220 has 36 divisors (see below), whose sum is σ = 91643741280. Its totient is φ = 8056592544.

The previous prime is 30212222189. The next prime is 30212222251. The reversal of 30212222220 is 2222221203.

30212222220 is a `hidden beast` number, since 302 + 122 + 22 + 220 = 666.

It is an interprime number because it is at equal distance from previous prime (30212222189) and next prime (30212222251).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 30212222193 and 30212222202.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83922660 + ... + 83923019.

It is an arithmetic number, because the mean of its divisors is an integer number (2545659480).

Almost surely, 2^30212222220 is an apocalyptic number.

30212222220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30212222220 is an abundant number, since it is smaller than the sum of its proper divisors (61431519060).

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

30212222220 is a wasteful number, since it uses less digits than its factorization.

30212222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167845694 (or 167845689 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 30212222220 its reverse (2222221203), we get a palindrome (32434443423).

The spelling of 30212222220 in words is "thirty billion, two hundred twelve million, two hundred twenty-two thousand, two hundred twenty".