212022706 has 40 divisors (see below), whose sum is σ = 377126640. Its totient is φ = 89374824.

The previous prime is 212022667. The next prime is 212022709. The reversal of 212022706 is 607220212.

212022706 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (212022709) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 321405 + ... + 322063.

It is an arithmetic number, because the mean of its divisors is an integer number (9428166).

Almost surely, 2^212022706 is an apocalyptic number.

212022706 is a deficient number, since it is larger than the sum of its proper divisors (165103934).

212022706 is an frugal number, since it uses more digits than its factorization.

212022706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756 (or 735 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 212022706 is about 14560.9994849255. Note that the first 3 decimals coincide. The cubic root of 212022706 is about 596.2944827175.

Adding to 212022706 its reverse (607220212), we get a palindrome (819242918).

The spelling of 212022706 in words is "two hundred twelve million, twenty-two thousand, seven hundred six".