212120011333223 has 12 divisors (see below), whose sum is σ = 257480191220400. Its totient is φ = 173912058980352.

The previous prime is 212120011333189. The next prime is 212120011333259. The reversal of 212120011333223 is 322333110021212.

It is not a de Polignac number, because 212120011333223 - 2¹⁰ = 212120011332199 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212120011333192 and 212120011333201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212120011333283) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94108255898 + ... + 94108258151.

It is an arithmetic number, because the mean of its divisors is an integer number (21456682601700).

Almost surely, 2^{212120011333223} is an apocalyptic number.

212120011333223 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

212120011333223 is a deficient number, since it is larger than the sum of its proper divisors (45360179887177).

212120011333223 is a wasteful number, since it uses less digits than its factorization.

212120011333223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188216514086 (or 188216514079 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 212120011333223 its reverse (322333110021212), we get a palindrome (534453121354435).

The spelling of 212120011333223 in words is "two hundred twelve trillion, one hundred twenty billion, eleven million, three hundred thirty-three thousand, two hundred twenty-three".