212312099 has 8 divisors (see below), whose sum is σ = 236633040. Its totient is φ = 189305856.

The previous prime is 212312071. The next prime is 212312101. The reversal of 212312099 is 990213212.

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

It is a cyclic number.

It is not a de Polignac number, because 212312099 - 2⁸ = 212311843 is a prime.

It is a super-3 number, since 3×212312099³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212312029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 328334 + ... + 328979.

It is an arithmetic number, because the mean of its divisors is an integer number (29579130).

Almost surely, 2^212312099 is an apocalyptic number.

212312099 is a deficient number, since it is larger than the sum of its proper divisors (24320941).

212312099 is a wasteful number, since it uses less digits than its factorization.

212312099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657349.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 212312099 is about 14570.9333606327. The cubic root of 212312099 is about 596.5656564996.

The spelling of 212312099 in words is "two hundred twelve million, three hundred twelve thousand, ninety-nine".