212099830 has 32 divisors (see below), whose sum is σ = 397774080. Its totient is φ = 81336960.

The previous prime is 212099827. The next prime is 212099851. The reversal of 212099830 is 38990212.

212099830 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30652 + ... + 36928.

It is an arithmetic number, because the mean of its divisors is an integer number (12430440).

Almost surely, 2^212099830 is an apocalyptic number.

212099830 is a deficient number, since it is larger than the sum of its proper divisors (185674250).

212099830 is a wasteful number, since it uses less digits than its factorization.

212099830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6424.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 212099830 is about 14563.6475513520. The cubic root of 212099830 is about 596.3667753531.

The spelling of 212099830 in words is "two hundred twelve million, ninety-nine thousand, eight hundred thirty".