212121023023209 has 8 divisors (see below), whose sum is σ = 282828561298272. Its totient is φ = 141413750048480.

The previous prime is 212121023023201. The next prime is 212121023023223. The reversal of 212121023023209 is 902320320121212.

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 212121023023209 - 2³ = 212121023023201 is a prime.

It is a super-3 number, since 3×212121023023209³ (a number of 44 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (212121023023201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64451907 + ... + 67663064.

It is an arithmetic number, because the mean of its divisors is an integer number (35353570162284).

Almost surely, 2^{212121023023209} is an apocalyptic number.

It is an amenable number.

212121023023209 is a deficient number, since it is larger than the sum of its proper divisors (70707538275063).

212121023023209 is a wasteful number, since it uses less digits than its factorization.

212121023023209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132650167.

The product of its (nonzero) digits is 5184, while the sum is 30.

The spelling of 212121023023209 in words is "two hundred twelve trillion, one hundred twenty-one billion, twenty-three million, twenty-three thousand, two hundred nine".