212198901 has 8 divisors (see below), whose sum is σ = 283044864. Its totient is φ = 141409440.

The previous prime is 212198893. The next prime is 212198933. The reversal of 212198901 is 109891212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212198901 - 2³ = 212198893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212198101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4405 + ... + 21066.

It is an arithmetic number, because the mean of its divisors is an integer number (35380608).

Almost surely, 2^212198901 is an apocalyptic number.

It is an amenable number.

212198901 is a deficient number, since it is larger than the sum of its proper divisors (70845963).

212198901 is a wasteful number, since it uses less digits than its factorization.

212198901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28251.

The product of its (nonzero) digits is 2592, while the sum is 33.

The square root of 212198901 is about 14567.0484656295. The cubic root of 212198901 is about 596.4596144281.

The spelling of 212198901 in words is "two hundred twelve million, one hundred ninety-eight thousand, nine hundred one".