212628922 has 16 divisors (see below), whose sum is σ = 353133792. Its totient is φ = 95206320.

The previous prime is 212628919. The next prime is 212628953. The reversal of 212628922 is 229826212.

It is a super-2 number, since 2×212628922² = 90422116941764168, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70653 + ... + 73600.

It is an arithmetic number, because the mean of its divisors is an integer number (22070862).

Almost surely, 2^212628922 is an apocalyptic number.

212628922 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212628922 is a deficient number, since it is larger than the sum of its proper divisors (140504870).

212628922 is a wasteful number, since it uses less digits than its factorization.

212628922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144333.

The product of its digits is 13824, while the sum is 34.

The square root of 212628922 is about 14581.8010547394. The cubic root of 212628922 is about 596.8622509708.

The spelling of 212628922 in words is "two hundred twelve million, six hundred twenty-eight thousand, nine hundred twenty-two".