212019998 has 4 divisors (see below), whose sum is σ = 318030000. Its totient is φ = 106009998.

The previous prime is 212019989. The next prime is 212020001. The reversal of 212019998 is 899910212.

212019998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53004998 + ... + 53005001.

It is an arithmetic number, because the mean of its divisors is an integer number (79507500).

Almost surely, 2^212019998 is an apocalyptic number.

212019998 is a deficient number, since it is larger than the sum of its proper divisors (106010002).

212019998 is a wasteful number, since it uses less digits than its factorization.

212019998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106010001.

The product of its (nonzero) digits is 23328, while the sum is 41.

The square root of 212019998 is about 14560.9064965063. The cubic root of 212019998 is about 596.2919440392.

The spelling of 212019998 in words is "two hundred twelve million, nineteen thousand, nine hundred ninety-eight".