211212093 has 8 divisors (see below), whose sum is σ = 282468256. Its totient is φ = 140382000.

The previous prime is 211212091. The next prime is 211212101. The reversal of 211212093 is 390212112.

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

It is not a de Polignac number, because 211212093 - 2¹ = 211212091 is a prime.

It is a super-2 number, since 2×211212093² = 89221096458881298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211212091) 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, 105358 + ... + 107343.

It is an arithmetic number, because the mean of its divisors is an integer number (35308532).

Almost surely, 2^211212093 is an apocalyptic number.

It is an amenable number.

211212093 is a deficient number, since it is larger than the sum of its proper divisors (71256163).

211212093 is a wasteful number, since it uses less digits than its factorization.

211212093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213035.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 211212093 is about 14533.1377548002. The cubic root of 211212093 is about 595.5335872055.

The spelling of 211212093 in words is "two hundred eleven million, two hundred twelve thousand, ninety-three".