212099998 has 16 divisors (see below), whose sum is σ = 347400576. Its totient is φ = 96318040.

The previous prime is 212099981. The next prime is 212100017. The reversal of 212099998 is 899990212.

It is a happy number.

212099998 is digitally balanced in base 2, because in such base 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 7 ways as a sum of consecutive naturals, for example, 22965 + ... + 30847.

It is an arithmetic number, because the mean of its divisors is an integer number (21712536).

Almost surely, 2^212099998 is an apocalyptic number.

212099998 is a deficient number, since it is larger than the sum of its proper divisors (135300578).

212099998 is a wasteful number, since it uses less digits than its factorization.

212099998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9119.

The product of its (nonzero) digits is 209952, while the sum is 49.

The square root of 212099998 is about 14563.6533191367. The cubic root of 212099998 is about 596.3669328097.

The spelling of 212099998 in words is "two hundred twelve million, ninety-nine thousand, nine hundred ninety-eight".