212103012222 has 24 divisors (see below), whose sum is σ = 460553413320. Its totient is φ = 70547636880.

The previous prime is 212103012211. The next prime is 212103012223. The reversal of 212103012222 is 222210301212.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 212103012195 and 212103012204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212103012223) 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, 12772072 + ... + 12788667.

It is an arithmetic number, because the mean of its divisors is an integer number (19189725555).

Almost surely, 2^212103012222 is an apocalyptic number.

212103012222 is an abundant number, since it is smaller than the sum of its proper divisors (248450401098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212103012222 is a wasteful number, since it uses less digits than its factorization.

212103012222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25561208 (or 25561205 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 212103012222 its reverse (222210301212), we get a palindrome (434313313434).

The spelling of 212103012222 in words is "two hundred twelve billion, one hundred three million, twelve thousand, two hundred twenty-two".