212402066 has 8 divisors (see below), whose sum is σ = 318710640. Its totient is φ = 106165188.

The previous prime is 212402027. The next prime is 212402093. The reversal of 212402066 is 660204212.

212402066 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×212402066² = 90229275282136712, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9776 + ... + 22811.

It is an arithmetic number, because the mean of its divisors is an integer number (39838830).

Almost surely, 2^212402066 is an apocalyptic number.

212402066 is a deficient number, since it is larger than the sum of its proper divisors (106308574).

212402066 is a wasteful number, since it uses less digits than its factorization.

212402066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35848.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 212402066 is about 14574.0202415119. The cubic root of 212402066 is about 596.6499092631.

Adding to 212402066 its reverse (660204212), we get a palindrome (872606278).

The spelling of 212402066 in words is "two hundred twelve million, four hundred two thousand, sixty-six".