212072066 has 8 divisors (see below), whose sum is σ = 318174480. Its totient is φ = 106013908.

The previous prime is 212072017. The next prime is 212072083. The reversal of 212072066 is 660270212.

212072066 is digitally balanced in base 2, 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 2×212072066² = 89949122355016712, 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, 6485 + ... + 21591.

It is an arithmetic number, because the mean of its divisors is an integer number (39771810).

Almost surely, 2^212072066 is an apocalyptic number.

212072066 is a deficient number, since it is larger than the sum of its proper divisors (106102414).

212072066 is a wasteful number, since it uses less digits than its factorization.

212072066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22128.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 212072066 is about 14562.6943248837. The cubic root of 212072066 is about 596.3407526233.

The spelling of 212072066 in words is "two hundred twelve million, seventy-two thousand, sixty-six".