212202730 has 16 divisors (see below), whose sum is σ = 382299264. Its totient is φ = 84806800.

The previous prime is 212202707. The next prime is 212202737. The reversal of 212202730 is 37202212.

It is a junction number, because it is equal to n+sod(n) for n = 212202698 and 212202707.

It is not an unprimeable number, because it can be changed into a prime (212202737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3555 + ... + 20905.

It is an arithmetic number, because the mean of its divisors is an integer number (23893704).

Almost surely, 2^212202730 is an apocalyptic number.

212202730 is a deficient number, since it is larger than the sum of its proper divisors (170096534).

212202730 is a wasteful number, since it uses less digits than its factorization.

212202730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18581.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 212202730 is about 14567.1798917979. The cubic root of 212202730 is about 596.4632019901.

Adding to 212202730 its reverse (37202212), we get a palindrome (249404942).

The spelling of 212202730 in words is "two hundred twelve million, two hundred two thousand, seven hundred thirty".