212011013223 has 16 divisors (see below), whose sum is σ = 314170205440. Its totient is φ = 141304758552.

The previous prime is 212011013219. The next prime is 212011013257. The reversal of 212011013223 is 322310110212.

It is not a de Polignac number, because 212011013223 - 2² = 212011013219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212011013196 and 212011013205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212011013293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 889261 + ... + 1102182.

It is an arithmetic number, because the mean of its divisors is an integer number (19635637840).

Almost surely, 2^212011013223 is an apocalyptic number.

212011013223 is a deficient number, since it is larger than the sum of its proper divisors (102159192217).

212011013223 is a wasteful number, since it uses less digits than its factorization.

212011013223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1995395 (or 1995389 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 212011013223 its reverse (322310110212), we get a palindrome (534321123435).

The spelling of 212011013223 in words is "two hundred twelve billion, eleven million, thirteen thousand, two hundred twenty-three".