212040206 has 16 divisors (see below), whose sum is σ = 366717024. Its totient is φ = 90069504.

The previous prime is 212040203. The next prime is 212040221. The reversal of 212040206 is 602040212.

212040206 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×212040206² = 89922097921044872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212040203) 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, 65435 + ... + 68598.

It is an arithmetic number, because the mean of its divisors is an integer number (22919814).

Almost surely, 2^212040206 is an apocalyptic number.

212040206 is a deficient number, since it is larger than the sum of its proper divisors (154676818).

212040206 is a wasteful number, since it uses less digits than its factorization.

212040206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134155.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 212040206 is about 14561.6003928140. The cubic root of 212040206 is about 596.3108879830.

Adding to 212040206 its reverse (602040212), we get a palindrome (814080418).

The spelling of 212040206 in words is "two hundred twelve million, forty thousand, two hundred six".