212700030 has 16 divisors (see below), whose sum is σ = 510480144. Its totient is φ = 56720000.

The previous prime is 212700011. The next prime is 212700031. The reversal of 212700030 is 30007212.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 212699982 and 212700009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212700031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3544971 + ... + 3545030.

It is an arithmetic number, because the mean of its divisors is an integer number (31905009).

Almost surely, 2^212700030 is an apocalyptic number.

212700030 is an abundant number, since it is smaller than the sum of its proper divisors (297780114).

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

212700030 is a wasteful number, since it uses less digits than its factorization.

212700030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7090011.

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 212700030 is about 14584.2390956813. The cubic root of 212700030 is about 596.9287783749.

Adding to 212700030 its reverse (30007212), we get a palindrome (242707242).

The spelling of 212700030 in words is "two hundred twelve million, seven hundred thousand, thirty".