30212220 has 48 divisors (see below), whose sum is σ = 85065120. Its totient is φ = 8011776.

The previous prime is 30212219. The next prime is 30212227. The reversal of 30212220 is 2221203.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 30212196 and 30212205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30212227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10276 + ... + 12884.

It is an arithmetic number, because the mean of its divisors is an integer number (1772190).

Almost surely, 2^30212220 is an apocalyptic number.

30212220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30212220 is an abundant number, since it is smaller than the sum of its proper divisors (54852900).

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

30212220 is a wasteful number, since it uses less digits than its factorization.

30212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2814 (or 2812 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 30212220 is about 5496.5643815023. The cubic root of 30212220 is about 311.4542151060.

Adding to 30212220 its reverse (2221203), we get a palindrome (32433423).

The spelling of 30212220 in words is "thirty million, two hundred twelve thousand, two hundred twenty".