212214305 has 8 divisors (see below), whose sum is σ = 255865344. Its totient is φ = 168966000.

The previous prime is 212214269. The next prime is 212214311. The reversal of 212214305 is 503412212.

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

It is not a de Polignac number, because 212214305 - 2²⁰ = 211165729 is a prime.

It is a super-2 number, since 2×212214305² = 90069822493266050, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 16.

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, 99521 + ... + 101630.

It is an arithmetic number, because the mean of its divisors is an integer number (31983168).

Almost surely, 2^212214305 is an apocalyptic number.

It is an amenable number.

212214305 is a deficient number, since it is larger than the sum of its proper divisors (43651039).

212214305 is a wasteful number, since it uses less digits than its factorization.

212214305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201367.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 212214305 is about 14567.5771835951. The cubic root of 212214305 is about 596.4740468648.

Adding to 212214305 its reverse (503412212), we get a palindrome (715626517).

The spelling of 212214305 in words is "two hundred twelve million, two hundred fourteen thousand, three hundred five".